only in patch2:
unchanged:
--- a/core/modules/migrate_drupal/src/MigrationStorage.php
+++ b/core/modules/migrate_drupal/src/MigrationStorage.php
@@ -11,6 +11,7 @@
 use Drupal\Component\Uuid\UuidInterface;
 use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
 use Drupal\Core\Entity\EntityStorageException;
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Language\LanguageManagerInterface;
@@ -51,8 +52,8 @@ class MigrationStorage extends BaseMigrationStorage {
    * @param \Drupal\migrate_drupal\Plugin\MigratePluginManager
    *  The cckfield plugin manager.
    */
-  public function __construct(EntityTypeInterface $entity_type, ConfigFactoryInterface $config_factory, UuidInterface $uuid_service, LanguageManagerInterface $language_manager, MigratePluginManager $cck_plugin_manager) {
-    parent::__construct($entity_type, $config_factory, $uuid_service, $language_manager);
+  public function __construct(EntityTypeInterface $entity_type, ConfigFactoryInterface $config_factory, UuidInterface $uuid_service, LanguageManagerInterface $language_manager, EntityStorageInterface $migration_group_storage, MigratePluginManager $cck_plugin_manager) {
+    parent::__construct($entity_type, $config_factory, $uuid_service, $language_manager, $migration_group_storage);
     $this->cckPluginManager = $cck_plugin_manager;
   }
 
@@ -65,6 +66,7 @@ public static function createInstance(ContainerInterface $container, EntityTypeI
       $container->get('config.factory'),
       $container->get('uuid'),
       $container->get('language_manager'),
+      $container->get('entity.manager')->getStorage('migration_group'),
       $container->get('plugin.manager.migrate.cckfield')
     );
   }