[monksy]

SVN allows for you to create mutliple repos within a repo. (That's probably why the path based auth works).

Git has the idea of sub-modules, but they're really just filters. (They're in the same repo). So ultimately, you don't have that kind of control.

[icebraining]

Git submodules are not in the same repo, they are a link from one repo to another, and you need to push to both if you make a change to the submodule. Maybe you're thinking of subtrees? I've never used those.