I tidied up my github and archived a bunch of old repositories. The few that I have kept, I have moved to my self-hosted fossil, and I have enabled a few useful options there like login-groups and correctly setting base URL and individual repository paths within fossil.
It transpired I didn't have many (any?) useful personal repositories. I have kept the repo for this site, a couple of old (and super old) hobby projects, my dotfiles, and exercises from the C programming language which I am currently working through very slowly.