$ git clone -n https://src.fedoraproject.org/rpms/kalendar.git /var/lib/mock/f40-build-802801-144106/root/chroot_tmpdir/scmroot/kalendar
Cloning into '/var/lib/mock/f40-build-802801-144106/root/chroot_tmpdir/scmroot/kalendar'...
$ git fetch origin 28bed0970b47ec20e61e42624cf6cde79d68680e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kalendar
 * [new ref]         28bed0970b47ec20e61e42624cf6cde79d68680e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28bed09 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild