out of sync with the index and working tree. If set to "warn",
print a warning of such a push to stderr, but allow the push to
proceed. If set to false or "ignore", allow such pushes with no
- message. Defaults to "warn".
+ message. Defaults to "refuse".
receive.denyNonFastForwards::
If set to true, git-receive-pack will deny a ref update which is