The use of init.defaultBranch here is really problematic, because different repositories may use a different name for their default, and this is a global (your home directory scope) setting you have to pre-set.
I have an alias I use called git default which works like this:
default = !git symbolic-ref refs/remotes/origin/HEAD | sed 's@^refs/remotes/origin/@@'
then it becomes ..."$(git default)"...
This figures out the actual default from the origin.This is a great solution to a stupid problem.
I work at a company that was born and grew during the master->main transition. As a result, we have a 50/50 split of main and master.
No matter what you think about the reason for the transition, any reasonable person must admit that this was a stupid, user hostile, and needlessly complexifying change.
I am a trainer at my company. I literally teach git. And: I have no words.
Every time I decide to NOT explain to a new engineer why it's that way and say, "just learn that some are master, newer ones are main, there's no way to be sure" a little piece of me dies inside.
I have a global setting for that. Whenever I work in a repo that deviates from that I override it locally. I have a few other aliases that rely on the default branch, such as “switch to the default branch”. So I usually notice it quite quickly when the value is off in a particular repo.