t / t4013 / diff.diff-tree_--stat_--compact-summary_initial_modeon commit t6044: add a testcase for index matching head, when head doesn't match HEAD (cf69f2a)
   1$ git diff-tree --stat --compact-summary initial mode
   2 file0 (mode +x) | 0
   3 1 file changed, 0 insertions(+), 0 deletions(-)
   4$