Filter products in repeater to include only those in the same brand, while not including current post

code-block.php

<?php
    add_action( 'pre_get_posts', 'lit_brand_filter' );
    function lit_brand_filter($query) { // Change lit_brand_filter to custom name, different each time you use
      
      
      $taxonomy = 'brand'; // Change to taxonomy name
      $terms = get_the_terms( get_the_ID(), $taxonomy );
      
      $tax_query = array(
                  'taxonomy' => $taxonomy,
                  'field' => 'slug',
                  'terms' => $terms[0]->slug  
      );
      
      // Ensure current post isn't output
      $current_id = get_the_ID();
      $query->set( 'post__not_in', array($current_id) );
      
      // Only get posts that have same taxonomy terms
      $query->tax_query->queries[] = $tax_query; 
      $query->query_vars['tax_query'] = $query->tax_query->queries;
      
       
    }
?>


Your repeater would be here,


<?php
    remove_action( 'pre_get_posts', 'lit_brand_filter' );
?>