--- a/mercurial/subrepo.py	Wed Mar 02 21:57:20 2011 -0600
+++ b/mercurial/subrepo.py	Fri Mar 04 14:00:49 2011 +0100
@@ -625,7 +625,8 @@
     def get(self, state, overwrite=False):
         if overwrite:
             self._svncommand(['revert', '--recursive'])
-        status = self._svncommand(['checkout', state[0], '--revision', state[1]])
+        status = self._svncommand(['checkout', '--force', state[0],
+                                   '--revision', state[1]])
         if not re.search('Checked out revision [0-9]+.', status):
             raise util.Abort(status.splitlines()[-1])
         self._ui.status(status)