remote-hg: don't update bookmarks unnecessarily

diff --git a/contrib/remote-helpers/git-remote-hg b/contrib/remote-helpers/git-remote-hg
index 4f6c7b7d891e96659d81a3f3512f09512b71f0f9..dbb4091d8603d39d0432a4fd90cafc882a5874ca 100755 (executable)
--- a/contrib/remote-helpers/git-remote-hg
+++ b/contrib/remote-helpers/git-remote-hg
@@ -830,6 +830,9 @@ def do_export(parser):
         else:
             old = ''
 
+        if old == new:
+            continue
+
         if bmark == 'master' and 'master' not in parser.repo._bookmarks:
             # fake bookmark
             pass