--- a/mercurial/hg.py	Fri Jun 10 09:36:38 2005 -0800
+++ b/mercurial/hg.py	Fri Jun 10 12:48:12 2005 -0800
@@ -366,6 +366,7 @@
                             self.tags[k] = bin(n)
             except KeyError: pass
         try:
+            if key == 'tip': return self.changelog.tip()
             return self.tags[key]
         except KeyError:
             return self.changelog.lookup(key)