--- a/contrib/shrink-revlog.py	Mon Sep 20 16:14:05 2010 -0500
+++ b/contrib/shrink-revlog.py	Mon Sep 20 16:25:29 2010 -0500
@@ -117,6 +117,7 @@
 
     try:
         group = util.chunkbuffer(r1.group(order, lookup, progress))
+        group = changegroup.unbundle10(group, "UN")
         r2.addgroup(group, unlookup, tr)
     finally:
         ui.progress(_('writing'), None)