t / t5100 / info0001on commit submodule: unset core.worktree if no working tree is present (4fa4f90)
   1Author: A (zzz) U Thor (Comment)
   2Email: a.u.thor@example.com
   3Subject: a commit.
   4Date: Fri, 9 Jun 2006 00:44:16 -0700
   5