Merge pull request #689 from github-for-unity/fixes/cache-invalidation-on-start

Calling CacheHasBeenInvalidated instead of RefreshCache

Author: shana

src/GitHub.Api/Git/Repository.cs

@@ -92,7 +92,7 @@ public void Start()
         {
             foreach (var cacheType in cacheInvalidationRequests)
             {
-                RefreshCache(cacheType);
+                CacheHasBeenInvalidated(cacheType);
             }
         }