In Koji 1.32 was added notes that _singleRow and _multiRow import to kojihub.py will be removed in Koji 1.36.
PR 4139
Metadata Update from @jcupova: - Custom field Size adjusted to None
Metadata Update from @jcupova: - Issue tagged with: testing-ready
Metadata Update from @mfilip: - Issue tagged with: testing-done
Commit 559dae70 fixes this issue
Commit 9c6aec77 fixes this issue
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/3590
Please continue any further discussion there.