Fixes version lookup

sources/src/main/java/io/akarin/server/mixin/core/MixinVersionCommand.java

@@ -68,13 +68,16 @@ public class MixinVersionCommand {
 			long current = System.currentTimeMillis();
             if (current - lastCheckMillis > 7200000 /* 2 hours */) {
                 lastCheckMillis = current;
-                obtainVersion(sender);
-                /* TODO Option: legacy-versioning-compat */ currentSender = sender;
+				hasVersion = false;
 			} else {
 				sender.sendMessage(versionMessage);
                 return;
 			}
 		}
+        if (!hasVersion) {
+            obtainVersion(sender);
+            /* TODO Option: legacy-versioning-compat */ currentSender = sender;
+        }
     }
     
     private CommandSender currentSender;
@@ -98,6 +101,7 @@ public class MixinVersionCommand {
         MCUtil.scheduleAsyncTask(() -> {
             // This should be lying in 'sendVersion' method, but comes here for relax main thread
             versionWaiters.add(sender);
+			sender.sendMessage("Checking version, please wait...");
             
             String version = Bukkit.getVersion();
             if (version == null) {
@@ -107,7 +111,6 @@ public class MixinVersionCommand {
             }
             
             if (version.startsWith("git-Akarin-")) {
-                
                 String[] parts = version.substring("git-Akarin-".length()).split("[-\\s]");
                 int distance = getDistance(null, parts[0]);
                 switch (distance) {
@@ -126,7 +129,6 @@ public class MixinVersionCommand {
             } else {
                 customVersion = true;
             }
-            
             versionObtaining = false;
         });
     }