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fix: skip auto-fix when HEAD is not the commit that triggered the workflow (v3) - #530
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…kflow On events without a pull request (issue_comment, workflow_run, schedule, workflow_dispatch) the auto-fix commit is pushed to GITHUB_REF_NAME, which is usually the default branch. If the workflow checked out another commit there, such as a pull request's head, the push put that commit and its ancestors on the default branch along with the formatting commit. Only commit when HEAD is GITHUB_SHA on those events, and skip with a warning otherwise.
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Nov 13, 2026
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The same change as #529, for the
v3.0.0-rc0branch (the commit is a clean cherry-pick). #529 has the full description.Summary
On events that carry no pull request (
issue_comment,workflow_run,schedule,workflow_dispatch), the auto-fix step pushesHEADtoGITHUB_REF_NAME, usually the default branch. If the workflow checked out another commit there, such as a pull request's head, that commit and its ancestors were pushed to the default branch together with the fix commit.Now auto-fix only commits when
HEADisGITHUB_SHAon those events, and is skipped with a warning otherwise.pushandpull_requestworkflows are not affected.Testing
Run on real runners in cpp-linter/test-cpp-linter-action with this branch (cpp-linter
2.0.0rc24, clang 18, ubuntu-latest). The stand-in for "a pull request's head is checked out" is an extra empty commit made afteractions/checkout.HEADahead ofGITHUB_SHAHEADisGITHUB_SHA(plain push)If you would rather pick this up when rebasing the branch onto
mainafter #529, feel free to close this one.