Get Post Object from ACF Repeater Field

ACF_repeater_post_object.txt

      <?php $contador = 0; if( have_rows('produtos_relacionados') ): ?>

      <?php while ( have_rows('produtos_relacionados') ) : the_row(); ?>   

      <?php $post_object = get_sub_field('produtos'); ?>

      <?php if( $post_object ): ?>

      <?php $post = $post_object; setup_postdata( $post ); ?>

      <?php if( $contador <= 4 ): $contador++; ?>

      <div class="item">
        <?php 
        if (has_post_thumbnail( $post->ID ) ){?>
          <div class="img" style="background:url('<?php echo the_post_thumbnail_url('madium-large') ?>')"></div>
        <?php 
        } 
        else{ ?>
          <div class="img" style="background:url('<?php echo get_template_directory_uri() .'/images/sem-imagem.jpg' ?>')"></div>
        <?php }
        ?>
        <h2><a href="<?php the_permalink()?>"><?php the_title() ?></a></h2>
        <p class="descricao">
          <?php echo excerpt(10) ?>
        </p>
        <a class="link" href="<?php the_permalink() ?>">Comprar</a>
      </div>

      <?php endif; ?>

      <?php wp_reset_postdata(); ?>

    <?php endif; ?>

    <?php endwhile; ?>

    <?php endif; ?>