This is a program I learned about just today that is a GUI for using git. https://www.syntevo.com/smartgit/. It's free for non-commercial use, and has both light and dark modes.
Here I have made both .pet and .sfs files of it, pick your favorite!
Requirements:
x86_64 processor
GTK+ 3.20 or later
Downloads:
I have tested on fossapup64. Should work other places too!
Screenshot!