Worked for me also! I did:
- git clone https://github.com/EpicGames/UnrealEngine.git
- Changed to /UnrealEngine
- git checkout tags/5.1.1-release -b 5.1.1-release
- Downloaded https://github.com/EpicGames/UnrealEngine/tree/5.1/Engine/Build/Commit.gitdeps.xml
- Changed mine and voila, Setup.bat working =D
Thanks man