diff --git a/web/src/fetch_status.ts b/web/src/fetch_status.ts
index f60f4b4c4e..4ae7298cc7 100644
--- a/web/src/fetch_status.ts
+++ b/web/src/fetch_status.ts
@@ -141,4 +141,15 @@ export class FetchStatus {
             max_id_for_messages(messages),
         );
     }
+
+    copy_status(fetch_status: FetchStatus): void {
+        this._found_newest = fetch_status.has_found_newest();
+        this._found_oldest = fetch_status.has_found_oldest();
+        this._expected_max_message_id = fetch_status._expected_max_message_id;
+        this._history_limited = fetch_status._history_limited;
+        // We don't want to copy over the loading state of the message list
+        // data since the same data object is not used for two messages lists
+        // and hence when the fetch is finished, only the original message list
+        // data will be updated.
+    }
 }