Why not just run bare repos on your n100? That’s what I do. I have no need for a code forge with code collab when it’s just me pushing
https://git-scm.com/book/en/v2/Git-on-the-Server-Setting-Up-the-Server
If you want a web viewer use a static site git viewer like https://pgit.pico.sh/
Stand up a local lfs server or figure out a different way to store large files. I generally avoid lfs