Where is, if it exists, a repo's .git or .gitconfig file?

Question

I'm following the Unity 3D guide to enable SmartMerge in Git , but I'm quite confused. It literally says:

Add the following text to your .git or .gitconfig file

but I don't have any in my repo. I know there is a .gitconfig file which is global for the whole Git installation, and thus it doesn't seem very logic as a place to put repo-specific settings, and .git is a folder in git repos, not a file.

Where do I have to put those lines?

Answer 1

The file where you should put those lines is actually config in the .git folder. Don't know why the Unity docs are so confusing about this.