whilst most of the material has offered the fluffy lore of the gith race, Here's a far more crunchy, mechanical breakdown of what tends to make a gith a gith.
Githzerai Zerths 4 githzerai zerths have taken refuge from https://crithitceramics.com/mastering-the-mystical-arts-a-how-to-guide-for-githzerai-sorcerers/