00e426ac00
When merge_and_push failed at the push step, the local defaultBranch ref was left pointing at the merge commit. This made the three-dot diff (defaultBranch...initiativeBranch) return empty because main already contained all changes — causing the review tab to show "no changes." Now mergeBranch returns the previous ref, and approveInitiative restores it on push failure. Also repaired the corrupted clone state.