--bare lacked refs/heads/main, so abra's post-normalize git ops (app secret insert / deploy) failed 'unable to fetch tags: reference not found' when fetching from the repointed local origin. --mirror copies all refs (heads+tags) → abra fetch OK + R014 passes (both verified). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>