What version are you running?
2.0.1
Describe the enhancement and the motivation for it.
I need to work with a remote hg repository.  However, I use git locally, so I use git-remote-hg to fetch/push to the hg remote.  I'd like to be able to rbt post directly from my git local repo, without needing to have a dummy hg local repo to which I push from git before rbt posting.
Please provide any additional information below.
$ git remote -v

origin hg::https://hg.nginx.org/unit/ (fetch)

origin hg::https://hg.nginx.org/unit/ (push)

$ rbt setup-repo --server https://hg.nginx.com --api-token TOKEN
Fails because it doesn't find a git repository (of course, it's a mercurial one).