Redownload kara if mdt is not valid

src/net/downloader.c

@@ -353,7 +353,8 @@ __handle_got_json(volatile sqlite3 *db, struct lkt_repo *repo, struct json_objec
         if (safe_json_get_long(kara_json, "unix_timestamp", &timestamp))
             continue;
         filestamp = get_mtime(kara.filename);
-        if (database_get_timestamp(db) >= filestamp && filestamp > timestamp) {
+        if (database_get_timestamp(db) >= filestamp && filestamp > timestamp &&
+            ! kara_metadata_read(&kara.mdt, kara.filename)) {
             LOG_INFO_SCT("REPO", "Ignore kara '%ld' with path '%s'", kara.id, kara.filename);
             continue;
         }