To set up a mirror from GitLab to GitHub, you need to follow these steps:
1. Create a [GitHub personal access token](https://help.github.com/articles/creating-a-personal-access-token-for-the-command-line/) with the "public_repo" box checked:
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1. Fill in the "Git repository URL" with the personal access token replacing the password `https://GitHubUsername:GitHubPersonalAccessToken@github.com/group/project.git`:
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1. Save
1. And either wait or trigger the "Update Now" button: