The problem here is that the new koji package requires python*-multilib to function (one of the very first lines in sbin/kojid is "import multilib"), which is not installed on koji01.stg.

The koji rpm seems to be missing the dependency on python*-multilib.

I have no idea where I can get an RHEL7 build for that package, and I'm not comfortable installing a package built for another distro (f23 instead of el7).

It's likely it's being prepped for the new koji signed repos feature so it could be in a state of flux. This is the express purpose of stg koji, to test new functionality, it's not guaranteed to be in a state of bliss at all times as a result.

I have fixed things, in the future for things in staging koji please ask in #fedora-releng and do not file a ticket unless we ask you to. while not perfect it will be broken at times and you have to expect that. while at it please make koschei submit a lot less builds to staging koji, it has 2 arma nd 2 x86 builders only, and what koschei is doing makes it extremely difficult for others to do any work.