As another comment says, git is just the version control software. You mean a decentralized hub for sharing git repos I assume. Git hub/lab/whatever are just websites that share a link fundamentally. They also all store the data for your repo, but there’s no reason that would need to be stored in the same place as the hub to find repos.
I’ve been trying to wrap my head around a decentralized git so I can release a pokemon rom hack.
Most ROM devs use xdelta or other patches to get around it, so you don’t include the ROM.
As another comment says, git is just the version control software. You mean a decentralized hub for sharing git repos I assume. Git hub/lab/whatever are just websites that share a link fundamentally. They also all store the data for your repo, but there’s no reason that would need to be stored in the same place as the hub to find repos.