Look for all <current_name> occurences in the code and replace them with the new branch name. Create a pull request for review

[gr2m]

There is no simple way to avoid false positives, but there are several places where the current branch name needs to be replaced:

• README badges
• CI configurations: GitHub Actions, Travis, CircleCI, etc
• Contributing docs

[gr2m]

I think I'd use GitHub's code search API and search for the terms

• <current_name>
• branch%3A<current_name>

The search does not seem to find all occurrences, but it does find all files with at least on occurrence, which is good enough for us.

[gr2m]

work in progress pull request:
gr2m/octokit-plugin-search-and-replace-pull-request#1