ci: base-commit #2
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| name: mergebase | ||
| on: | ||
| push: | ||
| jobs: | ||
| get_merge_base: | ||
| runs-on: ubuntu-latest | ||
| env: | ||
| UPSTREAM_REMOTE: torvalds | ||
| UPSTREAM_URL: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git | ||
| UPSTREAM_BRANCH: master | ||
| FETCH_STEP: 100 | ||
| FETCH_MAX: 2000 | ||
| steps: | ||
| steps: | ||
| - name: Checkout | ||
| uses: actions/checkout@v4 | ||
| - name: Add upstream remote (torvalds) | ||
| run: | | ||
| git remote add $UPSTREAM_REMOTE $UPSTREAM_URL 2>/dev/null || true | ||
| - name: Find upstream merge-base (torvalds/master) | ||
| run: | | ||
| set -e | ||
| DEPTH=$FETCH_STEP | ||
| # get Upstream initial flat | ||
| git fetch $UPSTREAM_REMOTE $UPSTREAM_BRANCH --depth=$DEPTH | ||
| while true; do | ||
| BASE=$(git merge-base HEAD FETCH_HEAD || true) | ||
| if [ -n "$BASE" ]; then | ||
| echo "Found merge-base: $BASE" | ||
| echo "BASE=$BASE" >> $GITHUB_ENV | ||
| break | ||
| fi | ||
| if [ $DEPTH -ge $FETCH_MAX ]; then | ||
| echo "Fallback to full fetch..." | ||
| git fetch $UPSTREAM_REMOTE $UPSTREAM_BRANCH --unshallow | ||
| BASE=$(git merge-base HEAD FETCH_HEAD) | ||
| echo "BASE=$BASE" >> $GITHUB_ENV | ||
| break | ||
| fi | ||
| echo "No base yet, deepening by $FETCH_STEP..." | ||
| git fetch $UPSTREAM_REMOTE $UPSTREAM_BRANCH --deepen=$FETCH_STEP | ||
| DEPTH=$((DEPTH + FETCH_STEP)) | ||
| done | ||
