mock has config option dnf_warning which is False by default. We can turn it always on, so people will not get taht confused when package_manager is set incorrectly.
dnf_warning
PR #1595
Metadata Update from @tkopecek: - Custom field Size adjusted to None
Commit c8147520 fixes this issue
Commit 16fb3ad1 fixes this issue
Metadata Update from @jcupova: - Issue tagged with: testing-done
Metadata Update from @dgregor: - Issue assigned to tkopecek
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/1594
Please continue any further discussion there.