t / t4110 / patch5.patchon commit rename_ref: don't ask read_ref_full where the ref came from (7522e3d)
   1diff --git a/new.txt b/new.txt
   2--- a/new.txt
   3+++ b/new.txt
   4@@ -10,3 +10,7 @@
   5 c11
   6 c111
   7 c1111
   8+c2
   9+c22
  10+c222
  11+c2222