Add repo source on kodi 21.0

[mlnl221]

How do I add the repo source url on kodi 21.0?

I have tried
https://github.com/warwickh/repository.warwickh/tree/master/matrix/zips/repository.warwickh
https://github.com/warwickh/repository.warwickh/tree/master
https://github.com/warwickh/repository.warwickh/raw/master/matrix/zips/repository.warwickh/repository.warwickh-0.9.4.zip
https://github.com/warwickh/repository.warwickh/

and NONE of them will find the zip file.

this is for android TV so I cant really download much.