If kojira decides, that tag needs regeneration and it is deleted meanwhile, kojira will never stop with trying to submit new tasks which fails.
Metadata Update from @tkopecek: - Issue close_status updated to: Duplicate - Issue status updated to: Closed (was: Open)
Duplicate of #1298 which has better description.
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/1029
Please continue any further discussion there.