Move pre-push ancestry guard to .github/workflows (activate it)#469
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strawgate merged 2 commits intofix/mention-pr-history-rewrite-guard-b9148a384abc45fafrom Feb 28, 2026
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[WIP] Add pre-push history check to prevent rewritten PR history
Move pre-push ancestry guard to .github/workflows (activate it)
Feb 28, 2026
strawgate
merged commit 85fe668
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fix/mention-pr-history-rewrite-guard-b9148a384abc45fa
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The pre-push ancestry guard added to prevent rewritten-history push attempts was placed in
github/workflows/(staging copy, not read by agents) instead of.github/workflows/(active location).Changes
.github/workflows/gh-aw-fragments/safe-output-push-to-pr.mdgithub/workflows/gh-aw-fragments/safe-output-push-to-pr.mdand emptygithub/directoryThe guard requires agents to verify
git merge-base --is-ancestor "<pr-head-sha>" HEADbefore callingpush_to_pull_request_branch, blocking pushes after any rebase/reset/cherry-pick that rewrites local history.💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.