I cloned it and then compiled it with xcode. I found one problem which is a badly encoded file, which I fixed using the file inspector to set the encoding and then saved it. After that it built and runs. On my 16' 2020 MBP it allows me to turn off my 5300M. When I open WOW it refuses to allow the card to be turned off, its web site says that's what it will do with an external monitor too.