I am using yum with the default Fedora repo config. FYI, I investigated because yum often reports the following: $ sudo yum clean all --enablerepo=updates-testing ... $ sudo yum update --enablerepo=updates-testing ... http://mirror.pnl.gov/fedora/linux/updates/testing/13/x86_64/repodata/rep...: [Errno -1] repomd.xml does not match metalink for updates-testing Trying other mirror. ... $ head /etc/yum.repos.d/fedora-updates-testing.repo [updates-testing] name=Fedora $releasever - $basearch - Test Updates failovermethod=priority #baseurl=http://download.fedoraproject.org/pub/fedora/linux/updates/testing/$releasever/$basearch/ mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=updates-testin... enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch