I guess that did it

Author: Fatih BAKIR

Source/UnityPack/Program.cs

@@ -142,14 +142,14 @@ private static void CreateTarGZ(string tgzFilename, string sourceDirectory)
         private static void AddDirectoryFilesToTar(TarArchive tarArchive, string sourceDirectory, bool recurse)
         {
             TarEntry tarEntry = TarEntry.CreateEntryFromFile(sourceDirectory);
+            tarEntry.Name = sourceDirectory.Remove(0, tarArchive.RootPath.Length + 1);
             tarArchive.WriteEntry(tarEntry, false);
 
             string[] filenames = Directory.GetFiles(sourceDirectory);
             foreach (string filename in filenames)
             {
                 tarEntry = TarEntry.CreateEntryFromFile(filename);
                 tarEntry.Name = filename.Remove(0, tarArchive.RootPath.Length + 1);
-                Console.WriteLine(tarEntry.Name);
                 tarArchive.WriteEntry(tarEntry, true);
             }