Git explicitly shows a "Committer" line when typing the commit message if it chooses a default, so I also find not setting one globally and getting this reminder to be more useful:

  # Please enter the commit message for your changes. Lines starting
  # with '#' will be ignored, and an empty message aborts the commit.
  #
  # Committer: Ben Alpert <[email protected]>
  #
  # On branch master
  # Your branch is up-to-date with 'origin/master'.
  #