GIT branching/cloning new repo question

[eluser]PhilTem[/eluser]
I'd say: Create a new repo.
Why? Because, as you said, you don't need any of the old code on the new servers. Creating a new repo will start you off of a clean repo without any code.
However, you can add a submodule that links to the other repo (as long as it's .git, too ) which can be updated as easy as a usual repo without actually "injecting" code into your repo's code that you have to worry about.

On the other hand you could create a clone of the repo and branch off - since cloning and creating a new repo with a submodule isn't very different.

Plus, if you have a new repo and want to look at code from the old repo you can do it easier than if you did in the same repo