I've been doing something similar.

Basically adding a alias to my zshrc, that runs: `git --git-dir=$HOME/dotfiles --work-tree=$HOME`.

And then set status.showUntrackedFiles to no.

See: https://github.com/sp1ritCS/dotfiles

I've got this idea from the following blogpost: https://news.opensuse.org/2020/03/27/Manage-dotfiles-with-Gi...