customize src attribute in woocommerce single product image

I need to add suffix to the end of image file name (in "href" attribute) that show when i click on the woocommerce single product image.

*: I'm using Enfold theme and is using magnific popup

frontend code :

div class="woocommerce-product-gallery woocommerce-product-gallery--with-images woocommerce-product-gallery--columns-4 images" data-columns="4" style="opacity: 1; transition: opacity 0.25s ease-in-out;"
figure class="woocommerce-product-gallery__wrapper"
    a href="https://azadiwood.com/wp-content/uploads/2017/10/Golestan-MDF-30.jpg" class="lightbox-added" title="" rel="product_images[grouped]"
        img width="200" height="325" src="https://azadiwood.com/wp-content/uploads/2017/10/Golestan-MDF-30.jpg" class="attachment-shop_single size-shop_single" alt="" srcset="https://azadiwood.com/wp-content/uploads/2017/10/Golestan-MDF-30.jpg 200w, https://azadiwood.com/wp-content/uploads/2017/10/Golestan-MDF-30-185x300.jpg 185w" sizes="(max-width: 200px) 100vw, 200px"
        span class="image-overlay overlay-type-image" style="left: 0px; top: 5px; overflow: hidden; display: block; height: 325px; width: 210px;"
        span class="image-overlay-inside"/span
        /span
    /a
    div class="thumbnails"/div
/figure

I need to change

a href="https://azadiwood.com/wp-content/uploads/2017/10/Golestan-MDF-30.jpg" class="lightbox-added" title="" rel="product_images[grouped]"

to

a href="https://azadiwood.com/wp-content/uploads/2017/10/Golestan-MDF-30-fullsize.jpg" class="lightbox-added" title="" rel="product_images[grouped]"