$ git clone -n https://src.fedoraproject.org/rpms/libxshmfence.git /var/lib/mock/f40-build-741420-110158/root/chroot_tmpdir/scmroot/libxshmfence
Cloning into '/var/lib/mock/f40-build-741420-110158/root/chroot_tmpdir/scmroot/libxshmfence'...
fatal: unable to access 'https://src.fedoraproject.org/rpms/libxshmfence.git/': The requested URL returned error: 503