Could Bodhi create some temporary repositories before composes are ready?

[Pavel Raiskup]

The KMail app stopped working for me today, and I realized there's
update to which I'd like to give a try:

  https://bodhi.fedoraproject.org/updates/FEDORA-2020-15d324f87c

In Bodhi, the suggested command to test this update is:

  sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-15d324f87c

But that doesn't work because the mirrored updates-testing is not
yet updated.  And downloading all the builds manually from Koji
is just too much work ATM.

Would it be possible to enhance Bodhi so it provides the repositories
somewhere in the meantime, before composes are ready?
This is not the first time I'd found this feature very convenient.

Pavel