diff -r ee553e6cd8c4 -r 1f75c1decdeb mercurial/patch.py
--- a/mercurial/patch.py	Thu Apr 19 17:08:12 2012 +0200
+++ b/mercurial/patch.py	Fri Apr 20 19:11:54 2012 +0200
@@ -230,7 +230,7 @@
                         elif line.startswith("# Node ID "):
                             nodeid = line[10:]
                         elif line.startswith("# Parent "):
-                            parents.append(line[10:])
+                            parents.append(line[9:].lstrip())
                         elif not line.startswith("# "):
                             hgpatchheader = False
                     elif line == '---' and gitsendmail: