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Fix HEAD_REF fetch: diff against HEAD instead of origin/HEAD_REF

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The shallow fetch (--depth=1) does not bring the PR head branch name
as a ref, causing: fatal: ambiguous argument 'origin/gandalf/pri-1593-fix-main'.

Fix: git diff origin/$BASE_REF HEAD (already checked out at github.sha)
instead of git diff origin/$BASE_REF origin/$HEAD_REF

Co-Authored-By: Paperclip <noreply@paperclip.ing>
This commit is contained in:
Chris Farhood
2026-05-16 21:21:49 +00:00
committed by Gandalf the Greybeard [agent]
parent adcce5a531
commit c3aafc3450
1 changed files with 1 additions and 3 deletions
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.github/workflows/detect-pr-pipeline.yaml
+1 -3
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@@ -51,9 +51,7 @@ jobs:
- name: Get changed files
run: |
mkdir -p /tmp/pr-detect
git fetch origin "$BASE_REF" --depth=1 2>/dev/null
git fetch origin "$HEAD_REF" --depth=1 2>/dev/null
git diff --name-only "origin/$BASE_REF" "origin/$HEAD_REF" > /tmp/pr-detect/changed_files.txt
git diff --name-only "origin/$BASE_REF" HEAD > /tmp/pr-detect/changed_files.txt
echo "Files found: $(wc -l < /tmp/pr-detect/changed_files.txt)"
cat /tmp/pr-detect/changed_files.txt