Simple Github question - how to add files to my fork?

Development Programming & Scripting
1

I’ve installed GitHub desktop application for window, created an account and am busy cloning a fork of the unreal engine.

Now how do I add files from other forks?

More specifically, I want to add this audio fix:

https://github.com/EpicGames/UnrealEngine/commit/9fff1159f8c758e0d587b6833215950a9c3a8b7f