Which repo should I clone?

[Dolan Murvihill]

Hello,

I've been able to figure out from all the various HOWTOs about the 
different kernel trees (main development, -next, -stable, the subsystem 
trees, etc.) and I see where the files and patches are archived on 
kernel.org, but I haven't been able to find the actual git repos that I 
need to clone to work on the main kernel, or any of the others. Can 
someone please elaborate on exactly where each of these are stored so 
that I can more easily translate this conceptual knowledge into the 
actual git commands I have to run to make it work?

Thanks,
Dolan