pre-rebase
~~~~~~~~~~
-This hook is called by 'git rebase' and can be used to prevent a branch
-from getting rebased.
-
+This hook is called by 'git rebase' and can be used to prevent a
+branch from getting rebased. The hook may be called with one or
+two parameters. The first parameter is the upstream from which
+the series was forked. The second parameter is the branch being
+rebased, and is not set when rebasing the current branch.
post-checkout
~~~~~~~~~~~~~