$ git status
# On branch master
# Your branch is behind 'origin/master' by 2 commits, and can be fast-forwarded.

nothing added to commit but untracked files present (use "git add" to track)

$ git push --force
Total 0 (delta 0), reused 0 (delta 0)
remote: error: denying non-fast-forward refs/heads/master (you should pull first)
To git@git.assembla.com:jhallam.git
 ! [remote rejected] master -> master (non-fast-foward)
error: failed to push some refs to 'git@git.assembla.com:jhallam.git'