We have an installation based on TLDH
At the moment the install is https://notebook.xpub.nl/
It was installed on a VPS on OVH following these instructions
In the end used "lab" and not "jupyterlab" for the user_environment setting.
Installed the git extension with:
sudo -E conda install jupyterlab-git -c conda-forge
But maybe considering uninstalling this... it's not super well integrated ... pulling changes leaves the notebook in a weird detached state -- need to close and reopen notebooks to see changes. Also the constand polling of the git interface is disturbing...
In contrast the promise of a simple way to import repos into a notebook seems good, but it's not (yet) working (needs some kind of plugin?):
Another try using: https://jupyterhub.github.io/nbgitpuller/link