Adding glob support to remotes

Hello,

I'm working on adding (basic) glob support to remote fetch definitions. This is to allow you to write things like

[remote "origin"]
  fetch = refs/heads/*:refs/remotes/upstream/*

I started to add code to git-parse-remote.sh:canon_refs_list_for_fetch() to preprocess the reflist to catch lines with a "*" in them then use the remote pattern to filter the output of from "git-ls-remote -h", blah, blah, you get the idea...

However, git-ls-remote needs the name of the remote repository (of course), 
but that isn't directly available in git-parse-remote.sh.  Should I
 a) pass it as a parameter from git-fetch.sh right through each intermediate 
function
 b) create a global?
 c) change git-check-ref-format to allow "*" in the name, then put the 
git-ls-remote call in git-fetch instead.

I don't like to do (b) as it's nasty programming behaviour; however passing a parameter is fairly intrusive to the existing code. Similarly (c) means I'm messing in places I suspect I shouldn't be (git-check-ref-format).

git-gods - what do I do?

Andy