Freeze break request: update koji package on rawhide/branched-composers

[Kevin Fenzi]

I'd like to update the koji package on
rawhide-composer.phx2.fedoraproject.org and
branched-composer.phx2.fedoraproject.org

This should fix the blocking retired packages issue noted in: 

https://fedorahosted.org/rel-eng/ticket/6244

If it causes some issue we can roll back to the current version of the
package. 

+1s?

kevin