It is my impression that git support wasn’t in the v8 series. Could you be running a different kicad? Have you installed a higher version (say a testing version) or compiled your own kicad? Check which executable file you are invoking.
I have never enabled/disabled git. I was just always compiling from source and running kicad’s earlier versions without problems.
I suspect that the problem is due to the openssl 3.4.1 introduced in my linux system instead of older openssl11-1.1.1.