Custom LOGO attributes

custom_logo.php

add_filter( 'wp_get_attachment_image_attributes', 'xxx_attachment_image', 90, 2 );
function xxx_attachment_image( $attr, $attachment ) {

   $custom_logo_id = get_theme_mod( 'custom_logo' );  
  
  if($attachment->ID == $custom_logo_id) {
  
	$attr['data-class'] = $custom_logo_id;

	$attr['data-hey'] = 'hey';
	
  }
  
  
	return $attr;
	
}