0000000000000000000000000000000000000000000000000000000000000000 ed2d65b7fe3c3f869a21cfec7f54867db6c8eb2cc9b0bf671522d87599704d70 committer <committer@example.com> 1112911993 -0700	commit (initial): sub-root
ed2d65b7fe3c3f869a21cfec7f54867db6c8eb2cc9b0bf671522d87599704d70 df5d889015388598b724a741b53437e4dee9d67a5dbe0fa9f361fedd4c9ac6e8 committer <committer@example.com> 1112912053 -0700	commit: sub-a
df5d889015388598b724a741b53437e4dee9d67a5dbe0fa9f361fedd4c9ac6e8 c79d38d6c8161bf2aec16032f82127c7ac237eeab69e1490422c93b5c314ce9c committer <committer@example.com> 1112912113 -0700	commit: sub-b
