$ git clone -n https://src.fedoraproject.org/rpms/root.git /var/lib/mock/f31-build-97457-32964/root/thebuilddir/tmp/scmroot/root
Cloning into '/var/lib/mock/f31-build-97457-32964/root/thebuilddir/tmp/scmroot/root'...
$ git reset --hard 5736fd78d48e337ee1f48fae0f5b2e7f8eb7816f
HEAD is now at 5736fd7 Root 6.18 requires pcm files to be in the same directory as libraries