[PATCH] use main as default branch instead of master

[Reto]

Replacing one hard coded value with another is really not helpful.
Git itself solves this locally with init.defaultBranch in its config.

If the corresponding option is unset you are helpfully told to choose
one. That is however not simply a matter of s/master/main/ but the
following:

>Names commonly chosen instead of 'master' are 'main', 'trunk' and
>'development'.

As you can see, multiple "common" options.

There's work ongoing in git to make this more streamlined,
last example I know being

  commit e06c9e1df28e04bbf013840c6c50ce1be41b9583
  Author: Thomas Weißschuh <thomas at t-8ch.de>
  Date:   Wed Nov 3 21:17:02 2021 +0100

  var: add GIT_DEFAULT_BRANCH variable.

There's also similar efforts that would allow querying a remote.

So I'd suggest you wait for upstream to figure it out first, rather than
blindly substituting the term which would break existing setup for no
real reason.