NewRepo headache

[Michael Schwendt]

$ koji latest-pkg dist-f12 mcs
Build                                     Tag                   Built by
----------------------------------------  --------------------  ----------------
mcs-0.7.1-4.fc12                          dist-f12              mschwendt

$ koji latest-pkg dist-f12-build mcs
Build                                     Tag                   Built by
----------------------------------------  --------------------  ----------------
mcs-0.7.1-4.fc12                          dist-f12              mschwendt

Additionally, I've waited for the NewRepo task to complete.
And still the next build fails due to an unresolvable dep as it only
is seeing the previous mcs package release. Is that due to mock related
caches or what?

How to _reliably_ wait for a new package to become available in
the buildroot?