--- a/mercurial/bundle2.py	Tue Mar 18 17:38:11 2014 -0700
+++ b/mercurial/bundle2.py	Tue Mar 18 17:43:08 2014 -0700
@@ -153,6 +153,7 @@
         if paramssize:
             for p in self._readexact(paramssize).split(' '):
                 p = p.split('=', 1)
+                p = [urllib.unquote(i) for i in p]
                 if len(p) < 2:
                     p.append(None)
                 params[p[0]] = p[1]