Issue #2920285: Update module can get 'stuck' with 'no releases available'

core/modules/update/src/UpdateProcessor.php

@@ -116,7 +116,7 @@ public function createFetchTask($project) {
     if (empty($this->fetchTasks)) {
       $this->fetchTasks = $this->fetchTaskStore->getAll();
     }
-    if (empty($this->fetchTasks[$project['name']])) {
+    if (empty($this->fetchTasks[$project['name']]) || $this->fetchTasks[$project['name']] !== $project) {
       $this->fetchQueue->createItem($project);
       $this->fetchTaskStore->set($project['name'], $project);
       $this->fetchTasks[$project['name']] = REQUEST_TIME;