diff -r 731fa8e3e580 -r 13d88b7eb3a0 mercurial/bundle2.py
--- a/mercurial/bundle2.py	Thu Feb 05 10:56:05 2015 -0800
+++ b/mercurial/bundle2.py	Thu Feb 05 10:57:45 2015 -0800
@@ -590,6 +590,7 @@
         while headerblock is not None:
             part = unbundlepart(self.ui, headerblock, self._fp)
             yield part
+            part.seek(0, 2)
             headerblock = self._readpartheader()
         self.ui.debug('end of bundle2 stream\n')