diff -r a210b40d0860 -r 3900f684a150 mercurial/commands.py
--- a/mercurial/commands.py	Sun May 13 19:15:54 2007 -0700
+++ b/mercurial/commands.py	Thu May 17 09:29:30 2007 -0700
@@ -1565,7 +1565,7 @@
             n = repo.commit(files, message, user, date, wlock=wlock, lock=lock)
             if opts.get('exact'):
                 if hex(n) != nodeid:
-                    repo.rollback()
+                    repo.rollback(wlock=wlock, lock=lock)
                     raise util.Abort(_('patch is damaged or loses information'))
         finally:
             os.unlink(tmpname)