Not available yet. There is no GitHub, GitLab, or Bitbucket importer, and there is no /api/v1/repos/import endpoint.
To copy a repository, clone it from the source and push it to Kizuna over HTTPS with a personal access token. Create the empty repository in the UI first. The token needs repo:write. The git username can be anything. The password is the token.
bash
git clone --mirror https://github.com/example/repo.git
cd repo.git
git push --mirror https://kizuna.example.com/myadmin/repo.gitDo not put the token in the remote URL. SSH remotes are not available yet.