Function detectPrBranch

packages/bumpy/src/commands/ci.ts:1765–1771

(rootDir: string)

      cwd: rootDir,
    });

    // Take the first result if multiple
    const commentId = existingComment?.split('\n')[0]?.trim();

    if (commentId) {
      await runArgsAsync(
        ['gh', 'api', `repos/{owner}/{repo}/issues/comments/${commentId}`, '-X', 'PATCH', '-F', 'body=@-'],
        { cwd: rootDir, input: markedBody },
      );
      log.dim('  Updated PR comment');