$ git clone -n https://src.fedoraproject.org/rpms/dragonbox.git /var/lib/mock/f40-build-2686752-68068/root/chroot_tmpdir/scmroot/dragonbox
Cloning into '/var/lib/mock/f40-build-2686752-68068/root/chroot_tmpdir/scmroot/dragonbox'...
$ git fetch origin 7a67a28365c38b74dda987e9508c3857c3da995e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dragonbox
 * [new ref]         7a67a28365c38b74dda987e9508c3857c3da995e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a67a28 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild