$ git clone -n https://src.fedoraproject.org/rpms/dragonbox.git /var/lib/mock/f40-build-789914-136126/root/chroot_tmpdir/scmroot/dragonbox
Cloning into '/var/lib/mock/f40-build-789914-136126/root/chroot_tmpdir/scmroot/dragonbox'...
$ git fetch origin fa54a8bc9e62490eb56c448bf6128e2381baf7ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dragonbox
 * [new ref]         fa54a8bc9e62490eb56c448bf6128e2381baf7ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa54a8b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild