The branch has not been renamed. It will be renamed after the release of beta 1.

There is a pending PR on DevGuide on how to change your existing local CPython repository to the new branch:
https://github.com/python/devguide/pull/662/files#diff-611263234e072dc403733b3dd46d0609cfe44b24d29f05841637b41d093adf0cR157

The details and timeline on the branch renaming can be read here:

https://mail.python.org/archives/list/python-committers@python.org/message/QWW7KGBW5UH2N5FOZOFXQBQPYELWQM3O/

On Fri., Mar. 26, 2021, 12:21 p.m. Skip Montanaro, <skip.montanaro@gmail.com> wrote:
Can I distract people for a moment to ask a couple procedural questions about this change? I maintain my own fork of https://github.com/python/cpython, but don't yet see a main branch on python/cpython.

  • When is the new main branch supposed to appear
  • Once it does, what will I need to do other than to update my fork?
  • I have a branch in my fork (register2) which is a branch from my fork's master. Not being a Git whiz, how will I switch so my register2 branch has the new main as its upstream (I think that's the correct word)?
  • How long will master be around after the switch before going to that big branch in the sky?
I was able to scrounge up the few commands necessary to make the change to one of my standalone projects and successfully move it from master to main. The several articles I at least peeked at all followed pretty much the same recipe as this one:

https://stevenmortimer.com/5-steps-to-change-github-default-branch-from-master-to-main/

None, however, discuss how the change will affect forks. I'm a bit unclear how that part is supposed to work. I thought I might find a process PEP about this change, but saw nothing obvious in PEP 0. I'm sure this is a trivial few git commands for those more familiar with the toolchain than I am, but I see over 18k forks of the repository. I suspect a few people out of that crowd will be in the same boat as me.

Thx,

Skip
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