$ git clone -n https://src.fedoraproject.org/rpms/kf6-kjobwidgets.git /var/lib/mock/f40-build-788161-135049/root/chroot_tmpdir/scmroot/kf6-kjobwidgets
Cloning into '/var/lib/mock/f40-build-788161-135049/root/chroot_tmpdir/scmroot/kf6-kjobwidgets'...
$ git fetch origin cd027989bcb0e857a9fb6e8e1d6a04042904e080:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kjobwidgets
 * [new ref]         cd027989bcb0e857a9fb6e8e1d6a04042904e080 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd02798 6.0.0