Organization owners can allow or prevent the forking of any private repositories owned by your organization.

By default, new organizations are configured to disallow the forking of private repositories.

Tip: If you allow forking of private repositories at the organization level, you can also configure the ability to fork a specific private repository. For more information, see "Allowing people to fork a private repository owned by your organization."

  1. In the top right corner of GitHub, click your profile photo, then click Your profile. Profile photo

  2. On the left side of your profile page, under "Organizations", click the icon for your organization. organization icons

  3. Under your organization name, click Settings. Organization settings button

  4. In the left sidebar, click Member privileges. Member privileges option in org settings

  5. Under "Repository forking", select Allow forking of private repositories. Checkbox to allow or disallow forking in the organization

  6. Click Save.

Further reading