$ git clone -n https://src.fedoraproject.org/rpms/gtk-xfce-engine.git /var/lib/mock/f31-build-97574-32970/root/chroot_tmpdir/scmroot/gtk-xfce-engine
Cloning into '/var/lib/mock/f31-build-97574-32970/root/chroot_tmpdir/scmroot/gtk-xfce-engine'...
$ git reset --hard 6324e9ae0df1b7d17b7f6025dcdff02f012cbd48
HEAD is now at 6324e9a - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild