$ git clone -n https://src.fedoraproject.org/rpms/kf6-kguiaddons.git /var/lib/mock/f40-build-2494902-61664/root/chroot_tmpdir/scmroot/kf6-kguiaddons
Cloning into '/var/lib/mock/f40-build-2494902-61664/root/chroot_tmpdir/scmroot/kf6-kguiaddons'...
$ git fetch origin 93a281c97f934fed9f860b05d140aecd38a95694:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kguiaddons
 * [new ref]         93a281c97f934fed9f860b05d140aecd38a95694 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 93a281c 6.0.0