How can I setup a git repository to be a collection of 3 different repositories?

I would like to have a git repository f开发者_开发技巧or my wordpress plugins directory and I would like it to pull from each plugins own repository and be easy to update when a plugin is updated. How is this possible?

Possibly submodules: http://git-scm.com/docs/git-submodule

Submodules would be the way to go.

Here is a tutorial to get you started.