if you wanted a cms and was using jekyll, why not something like https://forestry.io/ https://forestry.io/ ? it's git-aware, which means it should work with git

if you wanted a cms and was using jekyll, why not something like https://forestry.io/ https://forestry.io/ ? it's git-aware, which means it should work with github pages (i've not tried it myself, other than a cursory look-see).