$ git clone -n https://src.fedoraproject.org/rpms/cyrus-timezones.git /var/lib/mock/f40-build-796476-140694/root/chroot_tmpdir/scmroot/cyrus-timezones
Cloning into '/var/lib/mock/f40-build-796476-140694/root/chroot_tmpdir/scmroot/cyrus-timezones'...
$ git fetch origin 3e8b6fbe803934a268009c7c3b3f40927865b287:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cyrus-timezones
 * [new ref]         3e8b6fbe803934a268009c7c3b3f40927865b287 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e8b6fb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild