class ChefCLI::CookbookProfiler::Git

def revision
  git!("rev-parse HEAD").stdout.strip
rescue Mixlib::ShellOut::ShellCommandFailed => e
  # We may have an "unborn" branch, i.e. one with no commits.
  if unborn_branch_ref
    nil
  else
    # if we got here, but verify_ref_cmd didn't error, we don't know why
    # the original git command failed, so re-raise.
    raise e
  end
end