$ git clone -n https://src.fedoraproject.org/rpms/kf5-ktnef.git /var/lib/mock/f40-build-787355-134746/root/chroot_tmpdir/scmroot/kf5-ktnef
Cloning into '/var/lib/mock/f40-build-787355-134746/root/chroot_tmpdir/scmroot/kf5-ktnef'...
$ git fetch origin 6a0d4b9b93430de9d91a67c33b5bc61708ec1bfa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-ktnef
 * [new ref]         6a0d4b9b93430de9d91a67c33b5bc61708ec1bfa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a0d4b9 23.08.5