Pin GitHub Actions to full-length commit SHAs

[Dan Fiedler (danfiedler-msft)]

Summary

This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.

Why?

Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.

This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.

What changed?

Action pinning: Third-party action references in .github/workflows/ that used mutable tag-based references (e.g., actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g., actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.

Dependabot configuration:.github/dependabot.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). This groups Dependabot PRs for GitHub Actions and enforces a minimum 7-day cooldown between updates. If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.

Is this safe to merge?

Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for actions/checkout@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

[Copilot]

Pull request overview

Pins GitHub Actions dependencies to immutable commit SHAs and adds a seven-day Dependabot cooldown.

Changes:

• Pins workflow actions with version comments.
• Adds a GitHub Actions update cooldown.
• Leaves one mutable action reference unresolved.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/typos.yaml	Pins checkout.
.github/workflows/merge-gatekeeper.yml	Pins merge-gatekeeper.
.github/workflows/markdown-link-check.yml	Pins checkout and link checker.
.github/workflows/label-title-prefix.yml	Pins github-script.
.github/workflows/label-issues.yml	Pins github-script.
.github/workflows/java-publish-package.yml	Pins build and artifact actions.
.github/workflows/java-integration-tests.yml	Pins Java test actions.
.github/workflows/java-build.yml	Pins Java build actions.
.github/workflows/codeql-analysis.yml	Pins CodeQL and build actions.
.github/workflows/close-inactive-issues.yml	Pins stale action.
.github/dependabot.yml	Adds seven-day cooldown.

---

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[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/close-inactive-issues.yml:13

• This SHA is the v10.4.0 commit, but the replaced reference was v11; GitHub currently resolves both v11 and immutable v11.0.0 to 4391f3da.... As written, the security-only pinning change silently downgrades this workflow by a major version, contrary to the PR's no-behavior-change claim.

 - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0

[Dan Fiedler (danfiedler-msft)]

Summary

This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.

Why?

Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.

This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.

What changed?

Action pinning: Third-party action references in .github/workflows/ that used mutable tag-based references (e.g., actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g., actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.

Dependabot configuration:.github/dependabot.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). This groups Dependabot PRs for GitHub Actions and enforces a minimum 7-day cooldown between updates. If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.

Is this safe to merge?

Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for actions/checkout@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

[Copilot]

Pull request overview

Pins GitHub Actions dependencies to immutable commit SHAs and adds a seven-day Dependabot cooldown.

Changes:

• Pins workflow actions with version comments.
• Adds a GitHub Actions update cooldown.
• Leaves one mutable action reference unresolved.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/typos.yaml	Pins checkout.
.github/workflows/merge-gatekeeper.yml	Pins merge-gatekeeper.
.github/workflows/markdown-link-check.yml	Pins checkout and link checker.
.github/workflows/label-title-prefix.yml	Pins github-script.
.github/workflows/label-issues.yml	Pins github-script.
.github/workflows/java-publish-package.yml	Pins build and artifact actions.
.github/workflows/java-integration-tests.yml	Pins Java test actions.
.github/workflows/java-build.yml	Pins Java build actions.
.github/workflows/codeql-analysis.yml	Pins CodeQL and build actions.
.github/workflows/close-inactive-issues.yml	Pins stale action.
.github/dependabot.yml	Adds seven-day cooldown.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/close-inactive-issues.yml:13

• This SHA is the v10.4.0 commit, but the replaced reference was v11; GitHub currently resolves both v11 and immutable v11.0.0 to 4391f3da.... As written, the security-only pinning change silently downgrades this workflow by a major version, contrary to the PR's no-behavior-change claim.

 - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0

[Dan Fiedler (danfiedler-msft)]

Summary

This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.

Why?

Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.

This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.

What changed?

Action pinning: Third-party action references in .github/workflows/ that used mutable tag-based references (e.g., actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g., actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.

Dependabot configuration:.github/dependabot.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). This groups Dependabot PRs for GitHub Actions and enforces a minimum 7-day cooldown between updates. If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.

Is this safe to merge?

Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for actions/checkout@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

[Copilot]

Pull request overview

Pins GitHub Actions dependencies to immutable commit SHAs and adds a seven-day Dependabot cooldown.

Changes:

• Pins workflow actions with version comments.
• Adds a GitHub Actions update cooldown.
• Leaves one mutable action reference unresolved.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/typos.yaml	Pins checkout.
.github/workflows/merge-gatekeeper.yml	Pins merge-gatekeeper.
.github/workflows/markdown-link-check.yml	Pins checkout and link checker.
.github/workflows/label-title-prefix.yml	Pins github-script.
.github/workflows/label-issues.yml	Pins github-script.
.github/workflows/java-publish-package.yml	Pins build and artifact actions.
.github/workflows/java-integration-tests.yml	Pins Java test actions.
.github/workflows/java-build.yml	Pins Java build actions.
.github/workflows/codeql-analysis.yml	Pins CodeQL and build actions.
.github/workflows/close-inactive-issues.yml	Pins stale action.
.github/dependabot.yml	Adds seven-day cooldown.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/close-inactive-issues.yml:13

• This SHA is the v10.4.0 commit, but the replaced reference was v11; GitHub currently resolves both v11 and immutable v11.0.0 to 4391f3da.... As written, the security-only pinning change silently downgrades this workflow by a major version, contrary to the PR's no-behavior-change claim.

 - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0

[Dan Fiedler (danfiedler-msft)]

Summary

This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.

Why?

Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.

This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.

What changed?

Action pinning: Third-party action references in .github/workflows/ that used mutable tag-based references (e.g., actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g., actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.

Dependabot configuration:.github/dependabot.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). This groups Dependabot PRs for GitHub Actions and enforces a minimum 7-day cooldown between updates. If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.

Is this safe to merge?

Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for actions/checkout@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

[Copilot]

Pull request overview

Pins GitHub Actions dependencies to immutable commit SHAs and adds a seven-day Dependabot cooldown.

Changes:

• Pins workflow actions with version comments.
• Adds a GitHub Actions update cooldown.
• Leaves one mutable action reference unresolved.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/typos.yaml	Pins checkout.
.github/workflows/merge-gatekeeper.yml	Pins merge-gatekeeper.
.github/workflows/markdown-link-check.yml	Pins checkout and link checker.
.github/workflows/label-title-prefix.yml	Pins github-script.
.github/workflows/label-issues.yml	Pins github-script.
.github/workflows/java-publish-package.yml	Pins build and artifact actions.
.github/workflows/java-integration-tests.yml	Pins Java test actions.
.github/workflows/java-build.yml	Pins Java build actions.
.github/workflows/codeql-analysis.yml	Pins CodeQL and build actions.
.github/workflows/close-inactive-issues.yml	Pins stale action.
.github/dependabot.yml	Adds seven-day cooldown.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/close-inactive-issues.yml:13

• This SHA is the v10.4.0 commit, but the replaced reference was v11; GitHub currently resolves both v11 and immutable v11.0.0 to 4391f3da.... As written, the security-only pinning change silently downgrades this workflow by a major version, contrary to the PR's no-behavior-change claim.

 - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0

[Dan Fiedler (danfiedler-msft)]

Summary

This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.

Why?

Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.

This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.

What changed?

Action pinning: Third-party action references in .github/workflows/ that used mutable tag-based references (e.g., actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g., actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.

Dependabot configuration:.github/dependabot.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). This groups Dependabot PRs for GitHub Actions and enforces a minimum 7-day cooldown between updates. If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.

Is this safe to merge?

Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for actions/checkout@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

[Copilot]

Pull request overview

Pins GitHub Actions dependencies to immutable commit SHAs and adds a seven-day Dependabot cooldown.

Changes:

• Pins workflow actions with version comments.
• Adds a GitHub Actions update cooldown.
• Leaves one mutable action reference unresolved.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/typos.yaml	Pins checkout.
.github/workflows/merge-gatekeeper.yml	Pins merge-gatekeeper.
.github/workflows/markdown-link-check.yml	Pins checkout and link checker.
.github/workflows/label-title-prefix.yml	Pins github-script.
.github/workflows/label-issues.yml	Pins github-script.
.github/workflows/java-publish-package.yml	Pins build and artifact actions.
.github/workflows/java-integration-tests.yml	Pins Java test actions.
.github/workflows/java-build.yml	Pins Java build actions.
.github/workflows/codeql-analysis.yml	Pins CodeQL and build actions.
.github/workflows/close-inactive-issues.yml	Pins stale action.
.github/dependabot.yml	Adds seven-day cooldown.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/close-inactive-issues.yml:13

• This SHA is the v10.4.0 commit, but the replaced reference was v11; GitHub currently resolves both v11 and immutable v11.0.0 to 4391f3da.... As written, the security-only pinning change silently downgrades this workflow by a major version, contrary to the PR's no-behavior-change claim.

 - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0

[Dan Fiedler (danfiedler-msft)]

Summary

This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.

Why?

Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.

This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.

What changed?

Action pinning: Third-party action references in .github/workflows/ that used mutable tag-based references (e.g., actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g., actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.

Dependabot configuration:.github/dependabot.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). This groups Dependabot PRs for GitHub Actions and enforces a minimum 7-day cooldown between updates. If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.

Is this safe to merge?

Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for actions/checkout@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

[Copilot]

Pull request overview

Pins GitHub Actions dependencies to immutable commit SHAs and adds a seven-day Dependabot cooldown.

Changes:

• Pins workflow actions with version comments.
• Adds a GitHub Actions update cooldown.
• Leaves one mutable action reference unresolved.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/typos.yaml	Pins checkout.
.github/workflows/merge-gatekeeper.yml	Pins merge-gatekeeper.
.github/workflows/markdown-link-check.yml	Pins checkout and link checker.
.github/workflows/label-title-prefix.yml	Pins github-script.
.github/workflows/label-issues.yml	Pins github-script.
.github/workflows/java-publish-package.yml	Pins build and artifact actions.
.github/workflows/java-integration-tests.yml	Pins Java test actions.
.github/workflows/java-build.yml	Pins Java build actions.
.github/workflows/codeql-analysis.yml	Pins CodeQL and build actions.
.github/workflows/close-inactive-issues.yml	Pins stale action.
.github/dependabot.yml	Adds seven-day cooldown.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/close-inactive-issues.yml:13

• This SHA is the v10.4.0 commit, but the replaced reference was v11; GitHub currently resolves both v11 and immutable v11.0.0 to 4391f3da.... As written, the security-only pinning change silently downgrades this workflow by a major version, contrary to the PR's no-behavior-change claim.

 - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0

[Dan Fiedler (danfiedler-msft)]

Summary

This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.

Why?

Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.

This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.

What changed?

Action pinning: Third-party action references in .github/workflows/ that used mutable tag-based references (e.g., actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g., actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.

Dependabot configuration:.github/dependabot.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). This groups Dependabot PRs for GitHub Actions and enforces a minimum 7-day cooldown between updates. If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.

Is this safe to merge?

Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for actions/checkout@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

[Copilot]

Pull request overview

Pins GitHub Actions dependencies to immutable commit SHAs and adds a seven-day Dependabot cooldown.

Changes:

• Pins workflow actions with version comments.
• Adds a GitHub Actions update cooldown.
• Leaves one mutable action reference unresolved.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/typos.yaml	Pins checkout.
.github/workflows/merge-gatekeeper.yml	Pins merge-gatekeeper.
.github/workflows/markdown-link-check.yml	Pins checkout and link checker.
.github/workflows/label-title-prefix.yml	Pins github-script.
.github/workflows/label-issues.yml	Pins github-script.
.github/workflows/java-publish-package.yml	Pins build and artifact actions.
.github/workflows/java-integration-tests.yml	Pins Java test actions.
.github/workflows/java-build.yml	Pins Java build actions.
.github/workflows/codeql-analysis.yml	Pins CodeQL and build actions.
.github/workflows/close-inactive-issues.yml	Pins stale action.
.github/dependabot.yml	Adds seven-day cooldown.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/close-inactive-issues.yml:13

• This SHA is the v10.4.0 commit, but the replaced reference was v11; GitHub currently resolves both v11 and immutable v11.0.0 to 4391f3da.... As written, the security-only pinning change silently downgrades this workflow by a major version, contrary to the PR's no-behavior-change claim.

 - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0

[Dan Fiedler (danfiedler-msft)]

Summary

This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.

Why?

Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.

This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.

What changed?

Action pinning: Third-party action references in .github/workflows/ that used mutable tag-based references (e.g., actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g., actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.

Dependabot configuration:.github/dependabot.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). This groups Dependabot PRs for GitHub Actions and enforces a minimum 7-day cooldown between updates. If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.

Is this safe to merge?

Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for actions/checkout@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

[Copilot]

Pull request overview

Pins GitHub Actions dependencies to immutable commit SHAs and adds a seven-day Dependabot cooldown.

Changes:

• Pins workflow actions with version comments.
• Adds a GitHub Actions update cooldown.
• Leaves one mutable action reference unresolved.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/typos.yaml	Pins checkout.
.github/workflows/merge-gatekeeper.yml	Pins merge-gatekeeper.
.github/workflows/markdown-link-check.yml	Pins checkout and link checker.
.github/workflows/label-title-prefix.yml	Pins github-script.
.github/workflows/label-issues.yml	Pins github-script.
.github/workflows/java-publish-package.yml	Pins build and artifact actions.
.github/workflows/java-integration-tests.yml	Pins Java test actions.
.github/workflows/java-build.yml	Pins Java build actions.
.github/workflows/codeql-analysis.yml	Pins CodeQL and build actions.
.github/workflows/close-inactive-issues.yml	Pins stale action.
.github/dependabot.yml	Adds seven-day cooldown.

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[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/close-inactive-issues.yml:13

• This SHA is the v10.4.0 commit, but the replaced reference was v11; GitHub currently resolves both v11 and immutable v11.0.0 to 4391f3da.... As written, the security-only pinning change silently downgrades this workflow by a major version, contrary to the PR's no-behavior-change claim.

 - uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0