Index: trunk/scripts/git-migration/git-migrate
===================================================================
--- trunk/scripts/git-migration/git-migrate	(revision 1880)
+++ trunk/scripts/git-migration/git-migrate	(revision 1881)
@@ -41,5 +41,9 @@
 
 def mergeHistory(old_pkg, new_pkg, n):
-    pass
+    cwd = os.getcwd()
+    subprocess.check_call(['git', 'push',
+                           'file:///%s/%s.git' % (cwd, new_pkg),
+                           'master:refs/heads/%s' % old_pkg],
+                          cwd=new_pkg)
 
 def mergeHistories():