diff -r 4f795f5fbb0b -r 4d875bb546dc mercurial/hg.py
--- a/mercurial/hg.py	Tue Apr 03 19:06:35 2012 +0200
+++ b/mercurial/hg.py	Tue Apr 03 22:01:28 2012 +0200
@@ -404,6 +404,8 @@
         release(srclock, destlock)
         if dircleanup is not None:
             dircleanup.cleanup()
+        if srcrepo is not None:
+            srcrepo.close()
 
 def _showstats(repo, stats):
     repo.ui.status(_("%d files updated, %d files merged, "