Comment 2 for bug 189182

The fix should be as simple as updating the fetch function with:

=== modified file '__init__.py'
--- __init__.py 2007-11-12 17:08:29 +0000
+++ __init__.py 2008-02-13 19:28:32 +0000
@@ -671,7 +671,7 @@
         self.target.fetch(self.source)

     @needs_write_lock
- def fetch(self, revision_id=None, pb=None):
+ def fetch(self, revision_id=None, pb=None, fetch_ghosts=False):
         """Fetch revisions. This is a partial implementation."""
         # assumes that self is a bzr compatible tree, and that source is hg
         # pull everything for simplicity.