On a fresh machine, which should come first the syncing of dotfiles or installation of their libraries?

This is a bit of a newbie question but I'm only starting out my journey with dotfiles! Suppose I have a fresh machine and I want to sync my existing dotfiles/settings from some repo. A dotfile may or may not have originated from a library which also has to be installed via some operation such as apt install or curl (e.g .gitconfig comes from git). This being said, which should I install first: - First the associated applications/libraries, and **then** sync the dotfiles from my repo? If I do this would I be able to overwrite the existing dotfiles that would have been added by installing said applications? - On the other way hand, one can also first sync the dotfiles from my repo and then install the libraries. However, wouldn't this be overwrite the dotfiles you had synced with the default dotfiles added by installing said libraries?