How up-to-date are the nightly-compose builds?

[Joshua C.]

I looked at http://alt.fedoraproject.org/pub/alt/nightly-composes/kde/
and saw that those are build every night from the current
rawhide.However the packages, they are build from, aren't the latest
ones available in koji for the specific date. For example
kde-x86_64-20091030.15.iso (composed in 17:19) contains
kernel-2.6.31.5-96.fc12 from 24-oct-2009, not the latest
kernel-2.6.31.5-105.fc12 from 29-oct-2009.

The STATEPATH=http://infrastructure.fedoraproject.org/pub/fedora/linux/development/x86_64/os/repodata/repomd.xml
but there is no access to this. So how up-to-date are those builds?