how to fetch entire heirarchy of refs from a remote?

Hi,

Say I have a repository which has a series of refs in a heirarchy such as a gerrit repository with changes specified something like:

refs/changes/96/55596/3 refs/changes/96/55596/4 refs/changes/96/57496/1 refs/changes/96/57496/2 refs/changes/96/69796/1 refs/changes/96/69796/2 refs/changes/96/71696/1 refs/changes/96/71696/2 refs/changes/97/40197/1 refs/changes/97/40197/2 refs/changes/97/40197/3 refs/changes/97/40197/4 ... refs/changes/97/71697/2 refs/changes/97/71697/3 refs/changes/98/47298/1 refs/changes/98/47298/2 refs/changes/98/47298/3 refs/changes/98/57298/1 refs/changes/98/57298/2 refs/changes/98/73598/1 refs/changes/99/44099/1 refs/changes/99/69299/1

Is it possible to specify a refspec such that all of these will be fetched? I tried doing

+refs/changes/*:refs/changes/*

but this doesn't work since the * can only be one portion of a refspec

The problem is that I would like to be able to pull all of these changes in a git mirror so that I can reduce network traffic I use to the gerrit server, by updating my local copy once and using the local copy on the other tasks I need. This is necessary since the gerrit server is (a) far away and (b) closes my connection when I have too many requests.

But, git clone --mirror and git fetch have failed to pull every ref, and only end up with heads and tags.

Regards, Jake