Scripts for switching Github repos to use a "main" branch as the default.
Pre-requisites: you need the Hub CLI to interact with Github, and you need JQ for parsing and mangling JSON. Make sure all three of the scripts in this repo are on your PATH. You may need to authenticate with Github via Hub before you start (or it might prompt you the first time it needs it).
$ git clone https://github.com/dsyer/main-branch-switch && cd $_
$ export PATH=`pwd`:$PATH
Rename Default Branch
rename_default.sh --org dsyer --name master --repo demo main
You can switch orgs --org <myorg> and you can target a specific repository with --repo <myrepo>.
List Default Branch Names
Default to sorted list of branch names and repo names (space separated):
list_branches.sh --org dsyer
...
main xd-launchers
main zipkin-collector-server
main zipkin-web
master dsyer
master scratches
master simple-gateway
master skaffold-devtools-demo
Alternatives
To create a "main" branch and retarget all the pull requests in all the repositories in your personal Github organization:
$ main_branch.sh
You can switch orgs --org <myorg> and you can target a specific repository with --repo <myrepo>.
The retarget.sh script can be used on its own to re-target pull requests (it is used by the main_branch.sh script):
$ retarget.sh --org <myorg> <myrepo> main 1234
If your repository uses branch protections, the branch_protect.sh script can be used to copy the settings from the base branch to the new branch. (it is used by the main_branch.sh script by default):
$ branch_protect.sh --org <myorg> <myrepo> main
The default org is your personal org, and the default pull request is all of them (the open ones).
What to do in your Fork
If you have a fork of a project that has changed its default branch, you probably want to update the remote:
$ git fetch origin --prune
$ git checkout main
$ git branch -d master
$ git remote set-head origin main
If you normally work with origin as the upstream then you are good to go. If you want your remote fork to be the upstream then you need to also do this, or something equivalent:
$ git push <myorg> main --set-upstream