$ git clone -n https://src.fedoraproject.org/rpms/kf6-kcoreaddons.git /var/lib/mock/f42-build-side-1-3533242-46361/root/chroot_tmpdir/scmroot/kf6-kcoreaddons
Cloning into '/var/lib/mock/f42-build-side-1-3533242-46361/root/chroot_tmpdir/scmroot/kf6-kcoreaddons'...
$ git fetch origin 72e3b02feb36418f2a7fa090e48e8a6f0fbbec7e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kcoreaddons
 * [new ref]         72e3b02feb36418f2a7fa090e48e8a6f0fbbec7e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72e3b02 6.14.0