$ git clone -n https://src.fedoraproject.org/rpms/fstransform.git /var/lib/mock/f31-build-52562-27687/root/thebuilddir/tmp/scmroot/fstransform
Cloning into '/var/lib/mock/f31-build-52562-27687/root/thebuilddir/tmp/scmroot/fstransform'...
$ git reset --hard 5facdaa82cbbf047db4d1e10fc5636f43930d49f
HEAD is now at 5facdaa Add some BuildRequires to enable optional functionality