$ /usr/bin/mergerepo_c --koji -b /mnt/koji/repos/virt6-xen-46-el6-build/619170/i386/blocklist -a i386 -o /tmp/koji/tasks/9692/1839692/repo -g /mnt/koji/repos/virt6-xen-46-el6-build/619170/groups/comps.xml -r file:///tmp/koji/tasks/9692/1839692/repo_619170_premerge/ -r http://mirror.centos.org/centos/6/updates/i386/ -r http://mirror.centos.org/centos/6/os/i386/
C_CREATEREPOLIB: Critical: cr_get_remote_metadata: curl_easy_perform failed: HTTP response code said error: The requested URL returned error: 404 Not Found
Warning: Downloading of repodata failed: http://mirror.centos.org/centos/6/os/i386/