In June 2022 we updated fork capabilities to include forking a repository into the same organization as its upstream repository, forking internal repositories to enterprise organizations, and for enterprise owners to limit where forks can be created. This opened up a lot of new possibilities for collaboration!
We recently updated fork capabilities again to unblock an additional workflow: fork repositories into another organization more than once. Before, when you tried to fork a repository into another organization that already had a fork of that repository, your option to finish forking into that organization was grayed out and GitHub let you know that a fork already exists in the target organization. With this update, you will have the option to continue forking it using a unique name.
We welcome your feedback on this in GitHub’s public feedback discussions.