$ git clone -n https://src.fedoraproject.org/rpms/blitz.git /var/lib/mock/f40-build-2274658-55020/root/chroot_tmpdir/scmroot/blitz
Cloning into '/var/lib/mock/f40-build-2274658-55020/root/chroot_tmpdir/scmroot/blitz'...
$ git fetch origin 0e4bb7be13bfaf7bf6b1e5c3b9e12d3ba90ed81a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/blitz
 * [new ref]         0e4bb7be13bfaf7bf6b1e5c3b9e12d3ba90ed81a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e4bb7b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild