Set Post attachement from one lang to another

index.php

add_action( 'wp', function () {
	return;

	if ( $_COOKIE['PHPSESSID'] !== 'xxxx' ) {
		return;
	}

	global $sitepress;

	foreach ( range( 1, 100 ) as $iteration ) {
		dump( $iteration );
		$sitepress->switch_lang( 'ru' );
		$products = get_posts(
			[
				'post_type'      => 'product',
				'post_status'    => 'publish',
				'posts_per_page' => 100,
				'paged'          => $iteration,
			]
		);

		foreach ( $products as $product ) {
			$thumbnail_ru = get_post_thumbnail_id( $product );

			$sitepress->switch_lang( 'uk' );
			$product_id_uk = $sitepress->get_object_id( $product->ID, 'page' );

			$result = set_post_thumbnail( $product_id_uk, $thumbnail_ru );
			dump( $result );
		}
	}

	dump( 'complete' );
	exit;
} );