For those saying that "master" as used in git has nothing to do with master/slave: Git was made to replace bitkeeper which had (has?) the concepts of master/slave repositories:
https://github.com/bitkeeper-scm/bitkeeper/blob/master/doc/H...
https://mail.gnome.org/archives/desktop-devel-list/2019-May/...
Edit: to those down-voting ... keep hitting the down arrow, maybe reality will go away and you won't be inconvenienced by it anymore.