Probably a silly question, but isn't at least the community edition of GitLab open source? So wouldn't it be a possibility to just fork the project outright an

Probably a silly question, but isn't at least the community edition of GitLab open source? So wouldn't it be a possibility to just fork the project outright and remove the telemetry from there? Or is there something in GitLab's licensing that makes that impossible despite it being 'open core' or whatever it is?