feature done
blob
mark :1
data 8
initial

reset refs/heads/A
commit refs/heads/A
mark :2
author Little O. Me <me@little.net> 1535228562 -0700
committer Little O. Me <me@little.net> 1535228562 -0700
data 8
Initial
M 100644 :1 twenty

blob
mark :3
data 11
twenty-mod

commit refs/heads/B
mark :4
author Little 'ol Me <me@laptop.(none)> 1535229544 -0700
committer Little 'ol Me <me@laptop.(none)> 1535229544 -0700
data 11
add twenty
from :2
M 100644 :3 twenty

blob
mark :5
data 6
final

commit refs/heads/master
mark :6
author Little Me <me@bigcompany.com> 1535229601 -0700
committer Little Me <me@bigcompany.com> 1535229601 -0700
data 9
whatever
from :4
M 100644 :5 twenty

tag v1.0
from :6
tagger Little John <second@merry.men> 1535229618 -0700
data 5
v1.0

done