[[!comment format=mdwn
 username="yarikoptic"
 avatar="http://cdn.libravatar.org/avatar/f11e9c84cb18d26a1748c33b48c924b4"
 subject="comment 5"
 date="2017-04-08T03:16:48Z"
 content="""
> How do you check if ssh has established a cached ssh connection?

ssh -O check  -- somewhat of an additional overhead, but possible

> GIT_SSH_COMMAND is used for every call to ssh in git-annex.

so then theoretically we could implement \"may be ...\" strategy on our end in our sshrun.
"""]]