<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
<preference for="MagentoCatalogImportExportModelExportProduct" type="MagentoCatalogImportExportModelMagentoCatalogImportExportExportProduct" />
</config>

<?php

namespace MagentoCatalogImportExportModelMagentoCatalogImportExportExport;;
class Product extends MagentoCatalogImportExportModelExportProduct
{
    public function __construct()
    {
        echo "Model Rewrite Working"; die();
    }
}