It doesn't work super well during live collaboration, but Overleaf does allow git access to the underlying document: https://www.overleaf.com/learn/how-to/Using

It doesn't work super well during live collaboration, but Overleaf does allow git access to the underlying document: https://www.overleaf.com/learn/how-to/Using_Git_and_GitHub https://www.overleaf.com/learn/how-to/Using_Git_and_GitHub