media_migration-8.x-1.x-dev/tests/modules/media_migration_test_change_tracking/media_migration_test_change_tracking.module

<?php

/**
 * @file
 * Test helper module for change tracking.
 */

/**
 * Implements hook_migration_plugins_alter().
 */
function media_migration_test_change_tracking_migration_plugins_alter(&$definitions) {
  foreach ($definitions as $id => $definition) {
    $destination = $definition['destination']['plugin'] ?? NULL;

    if ($destination === 'entity:media') {
      $definitions[$id]['source']['track_changes'] = TRUE;
    }
  }
}