--- a/hgext/evolve.py	Thu Mar 06 12:15:04 2014 -0800
+++ b/hgext/evolve.py	Fri Mar 07 14:46:45 2014 -0800
@@ -2303,6 +2303,7 @@
         current += readsize
         ui.progress('OBSEXC', current, unit="bytes", total=length)
     ui.progress('OBSEXC', None)
+    data.seek(0)
     return data
 
 @eh.addattr(localrepo.localpeer, 'evoext_pullobsmarkers_0')