Without direct database access there is no way how to get list of available sort-keys which makes this option unusable for some users. It would be great to add some basic sort-keys info into the command help.
PR #2790
Metadata Update from @jcupova: - Custom field Size adjusted to None
Metadata Update from @jcupova: - Issue set to the milestone: 1.25
Metadata Update from @tkopecek: - Issue tagged with: testing-ready
Metadata Update from @mfilip: - Issue tagged with: testing-done
Commit 56ee7eac fixes this issue
Commit 8b1fbc45 fixes this issue
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/2588
Please continue any further discussion there.