t / t4013 / diff.diff_--raw_initialon commit refs.h: add a note about sorting order of for_each_ref_* (adac811)
   1$ git diff --raw initial
   2:100644 100644 35d242b... 992913c... M  dir/sub
   3:100644 100644 01e79c3... 10a8a9f... M  file0
   4:000000 100644 0000000... b1e6722... A  file1
   5:100644 000000 01e79c3... 0000000... D  file2
   6$