See if we can not break all kernel tests

src/CronUpdater.php

@@ -14,6 +14,15 @@ use Drupal\package_manager\Exception\StageValidationException;
  */
 class CronUpdater extends Updater {
 
+  /**
+   * Whether or not cron updates are hard-disabled.
+   *
+   * @var bool
+   *
+   * @todo Remove this when TUF integration is stable.
+   */
+  private static $disabled = TRUE;
+
   /**
    * All automatic updates are disabled.
    *
@@ -140,7 +149,7 @@ class CronUpdater extends Updater {
    *   TRUE if cron updates are disabled, otherwise FALSE.
    */
   private function isDisabled(): bool {
-    return $this->configFactory->get('automatic_updates.settings')->get('cron') === static::DISABLED;
+    return self::$disabled ?: $this->configFactory->get('automatic_updates.settings')->get('cron') === static::DISABLED;
   }
 
 }

tests/src/Kernel/AutomaticUpdatesKernelTestBase.php

@@ -68,6 +68,14 @@ abstract class AutomaticUpdatesKernelTestBase extends PackageManagerKernelTestBa
     // from a sane state.
     // @see \Drupal\automatic_updates\Validator\CronFrequencyValidator
     $this->container->get('state')->set('system.cron_last', time());
+
+    // @todo Remove this when TUF integration is stable.
+    if (class_exists(CronUpdater::class)) {
+      $reflector = new \ReflectionClass(CronUpdater::class);
+      $reflector = $reflector->getProperty('disabled');
+      $reflector->setAccessible(TRUE);
+      $reflector->setValue(NULL, FALSE);
+    }
   }
 
   /**