Please help me to install on linux

I want to start to working in UE4. I see the tutorial in A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums but the problem is that the repo URL: https://github.com/EpicGames/UnrealEngine.git is’nt available.
Please help me to install it.

Have you linked your Git Account to be connected to Epic Games account to be able to download it?