Cherry-picking to Release Branches
Merge the PR to master first. Cherry-picks are made from the merged
commit, so a PR that is still open has nothing to pick.
Then run hack/cherry-pick-pull from the repo root:
SRC_UPSTREAM_REMOTE=origin DST_UPSTREAM_REMOTE=origin FORK_REMOTE=<your-remote> CHERRY_PICK=1 \
./hack/cherry-pick-pull origin/release-vX.YY <PR_NUMBER>
FORK_REMOTE is the remote for your personal fork — the script pushes the
cherry-pick branch there and opens the PR from it.
Bug fixes that should be backported are marked on the original PR with the
cherry-pick-candidate label.