buildgroups directory vanished from http://buildsys.fedoraproject.org ?

[Manuel Wolfshant]

    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.xml: 

[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