[[!comment format=mdwn
 username="joey"
 subject="""comment 3"""
 date="2015-09-15T17:34:15Z"
 content="""
What git-annex command? 

`git-annex sync` should already deal with this, AFAICS. It forces the push
to the remote's synced/git-annex branch.

Some remote's may have receive.denyNonFastForwards set, which will prevent
even a forced push. git-annex sync prints out some hints if this happens.
"""]]