$ git clone -n https://src.fedoraproject.org/rpms/dotnet-build-reference-packages.git /var/lib/mock/f33-build-523263-64580/root/chroot_tmpdir/scmroot/dotnet-build-reference-packages
Cloning into '/var/lib/mock/f33-build-523263-64580/root/chroot_tmpdir/scmroot/dotnet-build-reference-packages'...
fatal: unable to access 'https://src.fedoraproject.org/rpms/dotnet-build-reference-packages.git/': The requested URL returned error: 503