While trying to test build a program for EL-5, mock bails out with:

INFO: Results and/or logs in: /var/lib/mock//epel-5-x86_64/result ERROR: Command failed: # /usr/bin/yum --installroot /var/lib/mock/epel-5-x86_64/root/ install buildsys-build http://buildsys.fedoraproject.org/buildgroups/rhel5/x86_64/repodata/repomd.x...: [Errno 14] HTTP Error 404: Not Found Trying other mirror. Error: Cannot retrieve repository metadata (repomd.xml) for repository: groups. Please verify its path and try again

It looks like the buildgroups does not exist any more. Could someone please fix it (or tell me what to use instead, if it's gone for good) ?

Manuel