Update the description of PR #$ARGUMENTS.
Steps
1. Fetch current PR state
Run:
gh pr view $ARGUMENTS --json body,title,headRefName,baseRefName
2. Find the watermark
Look in the PR body for a comment in this exact format:
<!-- pr-update-watermark: <commit-sha> -->
If found, note the SHA — this is where the last update stopped. Call it $WATERMARK_SHA.
If not found, treat the entire commit history on the branch as new.
3. Get new commits
Run:
git log <b
[Description truncada. Veja o README completo no GitHub.]