Historically, Git and other software use terms such as master/slave, whitelist/blacklist which are based on racial concepts. Their continued use maintains the racial stereo-types they depict. Better alternatives in meaning and technical correctness exist, like leader/follower, blocklist/allowlist.
In the Nordic mythology, a saga is a long continuous recollection of histories of stories about the history of humans, legends and gods. This idea reflects very well what happens in a Git repository. Changes happen in branches (some teams tie them to User Stories), which are sometimes directly, sometimes loosely coupled to the main branch. Once they are finished they get added to the main branch, or get appended in case of a rebase. The mental model of a big book of stories fits this process very well.
Therefore the main branch in this project is named saga. master shall not be
used.