$ git clone -n https://src.fedoraproject.org/rpms/host-spawn.git /var/lib/mock/f40-build-795831-140332/root/chroot_tmpdir/scmroot/host-spawn
Cloning into '/var/lib/mock/f40-build-795831-140332/root/chroot_tmpdir/scmroot/host-spawn'...
$ git fetch origin 74437d31a83acbb95a53c5f2dc0e2c36862b20ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/host-spawn
 * [new ref]         74437d31a83acbb95a53c5f2dc0e2c36862b20ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74437d3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild