t / t7505 / expected-rebase-ion commit fetch-pack: write shallow, then check connectivity (cf1e7c0)
   1message [edit rebase-13]
   2message (no editor) [edit rebase-13]
   3message [squash rebase-12]
   4message (no editor) [squash rebase-11]
   5default [edit rebase-10]
   6message (no editor) [edit rebase-10]
   7message [fixup rebase-9]
   8message (no editor) [fixup rebase-8]
   9message (no editor) [squash rebase-7]
  10message [reword rebase-6]
  11message [squash rebase-5]
  12message (no editor) [fixup rebase-4]
  13message (no editor) [pick rebase-3]
  14message (no editor) [fixup rebase-2]
  15message (no editor) [fixup rebase-1]
  16merge [pick rebase-b]
  17message [pick rebase-a]