I feel obligated to point out vcsh [1], which is likely already packaged for your operating system.

[1] https://github.com/RichiH/vcsh

The main selling point is that you can set up various git repos for different things. I have one for SSH keys (and no, that does not get pushed anywhere except to my own private server), VIM, neovim, bash, and 'other' (for misc config files like .dir_colors, .gitconfig, etc.).