I have a Git server running on a Windows desktop machine that has inexplicably lost the ability to connect to the Internet. I want to move the repository to a Linux machine. I already know how to switch my cloned repositories to point to the new master once it's set up, but I need to get it to a new machine first.

I assume, since Windows and Linux are a bit different, I can't just copy the repository directory verbatim. But maybe I can? What are my options?