$ git clone -n https://src.fedoraproject.org/rpms/dhex.git /var/lib/mock/f40-build-791700-137680/root/chroot_tmpdir/scmroot/dhex
Cloning into '/var/lib/mock/f40-build-791700-137680/root/chroot_tmpdir/scmroot/dhex'...
$ git fetch origin 301a47a6f72fe5b40e18cb875d88a9682b2a109f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dhex
 * [new ref]         301a47a6f72fe5b40e18cb875d88a9682b2a109f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 301a47a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild