$ git clone -n https://src.fedoraproject.org/rpms/kf6-kdbusaddons.git /var/lib/mock/f40-build-2505704-61702/root/chroot_tmpdir/scmroot/kf6-kdbusaddons
Cloning into '/var/lib/mock/f40-build-2505704-61702/root/chroot_tmpdir/scmroot/kf6-kdbusaddons'...
$ git fetch origin ceae25bf351a0700ac349c9b924b37824eae7abc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kdbusaddons
 * [new ref]         ceae25bf351a0700ac349c9b924b37824eae7abc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ceae25b 6.0.0