This page outlines the steps that need to be done to cretate a new subrepository, in order for it to have the same properties as all existing subrepositories:

• a golang.org/x redirect
• automatic git mirroring from Gerrit to GitHub
• automatic importing of GitHub PRs into Gerrit CLs

Steps

1. Create a new empty Gerrit repository at https://go.googlesource.com, complete with a description.
2. Create a new empty GitHub repository at https://github.com/golang with the same name and description.
   • Turn off Wikis, Issues, Projects in repository settings.
   • On “Collaborators & teams” tab:
     • Add “golang org admins” team with Admin access.
     • Add “gophers” team with Write access.
     • Add “robots” team with Write access (can only be done by a maintainer of golang organization; ask someone else if you're not).
   • Create “cla: yes” and “cla: no” labels, they need to exist so that @googlebot can automatically apply them. (Without a “cla: yes” label, PRs won't be imported into Gerrit.)
3. Modify 3 x/build commands:
   • In cmd/gitmirror, add the new repo to shouldMirror function.
   • In maintner/maintnerd, add the new repo to goGitHubProjects slice.
   • In cmd/gerritbot, add the new repo to gerritProjectWhitelist map.
   • See an example CL for all 3 changes.
4. Modify 1 x/website command:
   • In cmd/golangorg, add the new repo to xMap map.
     • See an example CL.
5. Redeploy all affected commands in the following order:
   1. cmd/gitmirror first
   2. maintner/maintnerd second
      • Note that it's expected for the new repo not to appear in maintner until first issue or PR is created (see #25744).
   3. cmd/gerritbot third
   4. cmd/golangorg fourth