$ git clone -n https://src.fedoraproject.org/rpms/kf6-kjobwidgets.git /var/lib/mock/f42-build-side-1-3586068-46913/root/chroot_tmpdir/scmroot/kf6-kjobwidgets
Cloning into '/var/lib/mock/f42-build-side-1-3586068-46913/root/chroot_tmpdir/scmroot/kf6-kjobwidgets'...
$ git fetch origin 8459aee669ce07039a3b7c48f7192e0e590532a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kjobwidgets
 * [new ref]         8459aee669ce07039a3b7c48f7192e0e590532a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8459aee 6.16.0