I have a router (AVM Fritzbox) with a USB drive connected to it. I can access the drive via a network path from my computers. I only have access to the web interface of the router and the filesystem of the drive. No root or ssh access (I don't want it anyways because if I screw up anything I can't access internet or phone anymore).
Is it possible that this drive acts as a Git repository without Git being installed on the router itself so that I can access the repository from all computers that are connected to the router?