$ git clone -n https://src.fedoraproject.org/rpms/kf6-kcmutils.git /var/lib/mock/f42-build-862160-170674/root/chroot_tmpdir/scmroot/kf6-kcmutils
Cloning into '/var/lib/mock/f42-build-862160-170674/root/chroot_tmpdir/scmroot/kf6-kcmutils'...
$ git fetch origin 2d7c5cb6d2bc60e9a22e093ff1002dda7d3508a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kcmutils
 * [new ref]         2d7c5cb6d2bc60e9a22e093ff1002dda7d3508a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d7c5cb 6.8.0