$ git clone -n https://src.fedoraproject.org/rpms/mapnik.git /var/lib/mock/f39-build-1708785-41222/root/chroot_tmpdir/scmroot/mapnik
Cloning into '/var/lib/mock/f39-build-1708785-41222/root/chroot_tmpdir/scmroot/mapnik'...
$ git fetch origin 85c7f555e25e838a4bb4ccf610c4e6adc1c50b1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mapnik
 * [new ref]         85c7f555e25e838a4bb4ccf610c4e6adc1c50b1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85c7f55 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild