Where are newly released packages?

[Quentin Spencer]

I have a build (octave-forge, job 6461) that is failing because it 
depends on a package that was released a few hours ago. It seems to know 
that the package exists, but can't download it. I thought that once a 
package is released, even if it's not on all the mirrors yet, it would 
be available to the build system. I also don't see any recently released 
stuff on download.fedora.redhat.com, which I thought was the primary 
mirror where you could always find the latest releases. Am I wrong?

-Quentin