$ git clone -n https://src.fedoraproject.org/rpms/cyrus-timezones.git /var/lib/mock/f39-build-1457823-33019/root/chroot_tmpdir/scmroot/cyrus-timezones
Cloning into '/var/lib/mock/f39-build-1457823-33019/root/chroot_tmpdir/scmroot/cyrus-timezones'...
$ git fetch origin b47b31a0220141292ca652eca6d73621f311c047:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cyrus-timezones
 * [new ref]         b47b31a0220141292ca652eca6d73621f311c047 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b47b31a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild