imap::
The configuration variables in the 'imap' section are described
in gitlink:git-imap-send[1].
+
+receive.denyNonFastforwads::
+ If set to true, git-receive-pack will deny a ref update which is
+ not a fast forward. Use this to prevent such an update via a push,
+ even if that push is forced. This configuration variable is
+ set when initializing a shared repository.
+