$ git clone -n https://src.fedoraproject.org/rpms/portreserve.git /var/lib/mock/f31-build-49349-27272/root/thebuilddir/tmp/scmroot/portreserve
Cloning into '/var/lib/mock/f31-build-49349-27272/root/thebuilddir/tmp/scmroot/portreserve'...
$ git reset --hard 16b55e018bb0f4bd0c17f9053915b3d1c8423da3
HEAD is now at 16b55e0 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild