Seems like there are a lot of tasks stuck in the init state
Please report this issue to Fedora-releng, as they maintain that instance of MBS.
As far as I know stuck MBS is handled by infrastructure. Somebody already did it https://pagure.io/fedora-infrastructure/issue/10795 and he was redirected to https://pagure.io/releng/issue/10850.
Metadata Update from @ppisar: - Issue close_status updated to: Duplicate - Issue status updated to: Closed (was: Open)