and World of Warcraft \ _retail_ \ Interface \ AddOns folder are. I will take ElvUI as an example. The big advantage is that you don't need to copy your folders now everytime you pull the new changes.
How you use your Git Folders (if you are using a Git Client, like SmartGit & GitKraken etc) in your WoW installation. I keep this clean and simple and i assume you already use Git and know where your ...