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fix / enable checks for forked branches #24

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fix / enable checks for forked branches #24

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13 changes: 11 additions & 2 deletions action.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,15 @@

set -euxo pipefail

BASE_REF=$(git rev-parse --verify "origin/${GITHUB_BASE_REF}^{commit}")
HEAD_REF=$(git rev-parse --verify "origin/${GITHUB_HEAD_REF}^{commit}")
# Try remote refs first, fallback to SHA if not found
BASE_REF=$(git rev-parse --verify "origin/${GITHUB_BASE_REF}^{commit}" 2>/dev/null || echo "${GITHUB_BASE_SHA}")
HEAD_REF=$(git rev-parse --verify "origin/${GITHUB_HEAD_REF}^{commit}" 2>/dev/null || echo "${GITHUB_SHA}")

# Verify we have valid refs
if [ -z "${BASE_REF}" ] || [ -z "${HEAD_REF}" ]; then
echo "Error: Could not determine BASE_REF or HEAD_REF"
exit 1
fi

# Original commit check
! grep --quiet -E '^(amend|fixup|squash)!' <(git log --pretty=%s "${BASE_REF}..${HEAD_REF}")