rack_remote/master have changed to rack_remote/main

[Sherry520]

There's no existing/similar bug report.

• [X] I have searched the existing issues

This report is about a single actionable bug.

• [X] I'm reporting a single actionable bug

This report is about the ProGit book, version 2, English language.

• [X] This bug is not about a translation or old version

Bug covers book website/pdf

• [X] I confirm the bug is about the book as found on the website/pdf

Problem is present in the Pro Git book on the website?

• [X] This bug also affects the Pro Git book as published on the website.

Which version of the book is affected?

Source files

Describe the bug:

In Git Tools -> Advanced Merging -> Subtree Merging Code in the example:

git checkout -b rack_branch rack_remote/master error occured: fatal: 'rack_remote/master' is not a commit and a branch 'rack_branch' cannot be created from it

Steps to reproduce:

1. git remote add rack_remote https://github.com/rack/rack
2. git fetch rack_remote --no-tags
3. git checkout -b rack_branch rack_remote/master

Expected behavior:

Screenshots:

No response

Additional context:

The reason is that rack_remote/master has changed to rack_remote/main

Device

No response

Operating system

No response

Browser/application + version

No response