skip-worktree autostash on pull

Hi all - I use update-index --skip-worktree on some config files that I change locally and don’t want to commit, but every time I pull from the remote I have to go through a process of no-skip-worktree, stash, pull, stash pop, then skip-worktree again, which is all a bit tedious! Ideally some switch like --autostash for git pull would be really useful. Does anyone know if something like that exists? 

Thanks! Blake.