the test, it passes

Octokit.Tests.Integration/Clients/RepositoriesClientTests.cs

@@ -3,7 +3,6 @@ using System.Globalization;
 using System.Linq;
 using System.Threading.Tasks;
 using Octokit;
-using Octokit.Tests.Helpers;
 using Octokit.Tests.Integration;
 using Xunit;
 
@@ -538,6 +537,20 @@ public class RepositoriesClientTests
             Assert.Equal("https://github.com/Haacked/libgit2sharp.git", repository.CloneUrl);
             Assert.True(repository.Fork);
         }
+
+        [IntegrationTest]
+        public async Task ReturnsRedirectedRepository()
+        {
+            var github = Helper.GetAuthenticatedClient();
+
+            var repository = await github.Repository.Get("robconery", "massive");
+
+            Assert.Equal("https://github.com/FransBouma/Massive.git", repository.CloneUrl);
+            Assert.False(repository.Private);
+            Assert.False(repository.Fork);
+            Assert.Equal(AccountType.User, repository.Owner.Type);
+        }
+
     }
 
     

Octokit.Tests/Http/ConnectionTests.cs

@@ -439,7 +439,7 @@ namespace Octokit.Tests.Http
                 httpClient.Received().Send(Arg.Is<IRequest>(req =>
                     req.BaseAddress == _exampleUri &&
                     req.Body == body &&
-                    req.Headers["Accept"] == "application/vnd.github.v3+json; charset=utf-8" &&
+                    req.Headers["Accept"] == "application/vnd.github.quicksilver-preview+json; charset=utf-8, application/vnd.github.v3+json; charset=utf-8" &&
                     req.ContentType == "application/arbitrary" &&
                     req.Method == HttpMethod.Post &&
                     req.Endpoint == new Uri("https://other.host.com/path?query=val")), Args.CancellationToken);

Octokit.Tests/Http/JsonHttpPipelineTests.cs

@@ -30,7 +30,7 @@ namespace Octokit.Tests.Http
                 jsonPipeline.SerializeRequest(request);
 
                 Assert.Contains("Accept", request.Headers.Keys);
-                Assert.Equal("application/vnd.github.v3+json; charset=utf-8", request.Headers["Accept"]);
+                Assert.Equal("application/vnd.github.quicksilver-preview+json; charset=utf-8, application/vnd.github.v3+json; charset=utf-8", request.Headers["Accept"]);
             }
 
             [Fact]

Octokit/Http/JsonHttpPipeline.cs

@@ -11,7 +11,7 @@ namespace Octokit.Internal
     /// </summary>
     public class JsonHttpPipeline
     {
-        private const string v3ApiVersion = "application/vnd.github.v3+json; charset=utf-8";
+        private const string v3ApiVersion = "application/vnd.github.quicksilver-preview+json; charset=utf-8, application/vnd.github.v3+json; charset=utf-8";
 
         readonly IJsonSerializer _serializer;
 
@@ -32,7 +32,6 @@ namespace Octokit.Internal
 
             if (!request.Headers.ContainsKey("Accept"))
             {
-
                 request.Headers["Accept"] = v3ApiVersion;
             }