Unable to pull qunit & sizzle submodules in forked git repo

Unable to pull qunit & sizzle submodules in forked git repo

Hello,
has anyone managed to build jQuery from a forked repository?
The submodules won't pull in the clone of my forked repo, I can't work
out why - 'make init' does nothing, all I get is this:
Grabbing external dependencies...
From git@github.com:jollytoad/jquery
* branch master -> FETCH_HEAD
Already up-to-date.
From git@github.com:jollytoad/jquery
* branch master -> FETCH_HEAD
Already up-to-date.
It works fine though if I clone the original repo from
git://github.com/jquery/jquery.git and run 'make init'.
This is my .git/config:
[core]
    repositoryformatversion = 0
    filemode = true
    bare = false
    logallrefupdates = true
[remote "origin"]
    fetch = +refs/heads/*:refs/remotes/origin/*
    url = git@github.com:jollytoad/jquery.git
[branch "master"]
    remote = origin
    merge = refs/heads/master
[remote "jquery"]
    url = git://github.com/jquery/jquery.git
    fetch = +refs/heads/*:refs/remotes/jquery/*
and .gitmodules:
[submodule "test/qunit"]
    path = test/qunit
    url = git://github.com/jquery/qunit.git
[submodule "src/sizzle"]
    path = src/sizzle
    url = git://github.com/jeresig/sizzle.git
Any ideas?
- Mark
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