@mirabilos happily, the networking isn't normally what I use it for. As long as it can ssh out, 'apt install' and the very occasional curl, it's good enough to let me do my git operations and source code management in a sensible command line, and only switch to Real Windows for building and testing whatever I'm working on.

(Perhaps I could even build from the WSL bash command line, but I've never tried.)

I haven't even tried its GUI integration, although it might be worth it for gitk alone.