How to update all products with same SKU prefixes when updating stock with CSV?

This how I finally made it to update duplicated product variations with ‘-2’ SKU suffix:

function update_imported_product($object, $data)
{

    if ($object->get_type() === 'variation'){
        $product_id = wp_get_post_parent_id($object->get_id());
    }
    else
    {
        $product_id = $object->get_id();    
    }
    
    

    if(isset($product_id))
    {

        $sku_in = get_post_meta($product_id, '_sku', true);
                    
        // Search and update variations with suffix -2      
        $args = array(
        'post_type'  => 'product_variation',
        'meta_query' => array(
            array(
                'key'   => '_sku',
                'value' => $sku_in.'-2',
            )));            
        $variations = get_posts( $args);
            
        if(!empty($variations))
        {
            if(count($variations) > 0)
            {
                foreach ( $variations as $variation ) 
                {                       
                    
                    // Get input product data                   
                    if ($object->get_type() === 'variation'){
                        $pr=new WC_Product_Variation($object->get_id());
                    }
                    else{
                        $pr=new WC_Product($object->get_id());
                    }                   
            
                    // Update variation
                    $product_variation = new WC_Product_Variation($variation);      
                    $product_variation->set_stock_quantity($pr->get_stock_quantity());
                    $product_variation->set_weight($pr->get_weight());
                    $product_variation->set_regular_price($pr->get_regular_price()); 
                    $product_variation->save();
                                                                    
                }
            }
        }
        
    }
                
    
    return $object;
}

add_action( 'woocommerce_product_import_inserted_product_object', 'update_imported_product', 10, 2 );