How to mirror?

[Kenneth Porter <shiva sewingwitch com>]

I want to mirror updates-testing for FC2 to my server. What's the correct 
way to do that? I mostly need the new repo metadata format as I've updated 
yum to use the new FC3-style XML metadata, and downloads.fedoralegacy.org 
lacks that for the FC2 directories.

I essentially want to script a fetch of the RPM's in 
<http://download.fedoralegacy.org/fedora/2/updates-testing/i386/> and then 
run createrepo on the result.