$ git clone -n https://src.fedoraproject.org/rpms/libxfce4util.git /var/lib/mock/f42-flatpak-app-build-59178851-6571539/root/chroot_tmpdir/scmroot/libxfce4util
Cloning into '/var/lib/mock/f42-flatpak-app-build-59178851-6571539/root/chroot_tmpdir/scmroot/libxfce4util'...
$ git fetch origin 99fd4c330cce469a2e8004243d474552041b59ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxfce4util
 * [new ref]         99fd4c330cce469a2e8004243d474552041b59ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99fd4c3 Update to v4.20.1