diff --git a/GITALY_SERVER_VERSION b/GITALY_SERVER_VERSION
index afed694eedecdf030963c648ad6a9013d5ea65ba..e40e4fc339c6394281ac8bc92b4138145842f841 100644
--- a/GITALY_SERVER_VERSION
+++ b/GITALY_SERVER_VERSION
@@ -1 +1 @@
-0.65.0
+0.66.0
diff --git a/lib/gitlab/git/repository.rb b/lib/gitlab/git/repository.rb
index 37d67b6052cf5bae9e98e505ce1de994d3e0725e..54c28e45cecd3adaa805ed9c516f5d3255c4d535 100644
--- a/lib/gitlab/git/repository.rb
+++ b/lib/gitlab/git/repository.rb
@@ -1154,23 +1154,13 @@ module Gitlab
       end
 
       def fetch_repository_as_mirror(repository)
-        remote_name = "tmp-#{SecureRandom.hex}"
-
-        # Notice that this feature flag is not for `fetch_repository_as_mirror`
-        # as a whole but for the fetching mechanism (file path or gitaly-ssh).
-        url, env = gitaly_migrate(:fetch_internal) do |is_enabled|
+        gitaly_migrate(:remote_fetch_internal_remote) do |is_enabled|
           if is_enabled
-            repository = RemoteRepository.new(repository) unless repository.is_a?(RemoteRepository)
-            [GITALY_INTERNAL_URL, repository.fetch_env]
+            gitaly_remote_client.fetch_internal_remote(repository)
           else
-            [repository.path, nil]
+            rugged_fetch_repository_as_mirror(repository)
           end
         end
-
-        add_remote(remote_name, url, mirror_refmap: :all_refs)
-        fetch_remote(remote_name, env: env)
-      ensure
-        remove_remote(remote_name)
       end
 
       def blob_at(sha, path)
@@ -1940,6 +1930,16 @@ module Gitlab
         false
       end
 
+      def rugged_fetch_repository_as_mirror(repository)
+        remote_name = "tmp-#{SecureRandom.hex}"
+        repository = RemoteRepository.new(repository) unless repository.is_a?(RemoteRepository)
+
+        add_remote(remote_name, GITALY_INTERNAL_URL, mirror_refmap: :all_refs)
+        fetch_remote(remote_name, env: repository.fetch_env)
+      ensure
+        remove_remote(remote_name)
+      end
+
       def fetch_remote(remote_name = 'origin', env: nil)
         run_git(['fetch', remote_name], env: env).last.zero?
       end
diff --git a/lib/gitlab/gitaly_client/remote_service.rb b/lib/gitlab/gitaly_client/remote_service.rb
index 9218f6cfd6887832f7c5f2f307d350a94c40b554..559a901b9a3abcad0e455990984c4f8a119fcfcb 100644
--- a/lib/gitlab/gitaly_client/remote_service.rb
+++ b/lib/gitlab/gitaly_client/remote_service.rb
@@ -23,6 +23,19 @@ module Gitlab
 
         response.result
       end
+
+      def fetch_internal_remote(repository)
+        request = Gitaly::FetchInternalRemoteRequest.new(
+          repository: @gitaly_repo,
+          remote_repository: repository.gitaly_repository
+        )
+
+        response = GitalyClient.call(@storage, :remote_service,
+                                     :fetch_internal_remote, request,
+                                     remote_storage: repository.storage)
+
+        response.result
+      end
     end
   end
 end
diff --git a/spec/lib/gitlab/git/repository_spec.rb b/spec/lib/gitlab/git/repository_spec.rb
index 0e4292026df0276c14eb4516cfdc1d1e94c4ad49..11578e4edd54eb01d9821de09a36cd375e3d03aa 100644
--- a/spec/lib/gitlab/git/repository_spec.rb
+++ b/spec/lib/gitlab/git/repository_spec.rb
@@ -648,29 +648,39 @@ describe Gitlab::Git::Repository, seed_helper: true do
       Gitlab::Shell.new.remove_repository(TestEnv.repos_path, 'my_project')
     end
 
-    it 'fetches a repository as a mirror remote' do
-      subject
+    shared_examples 'repository mirror fecthing' do
+      it 'fetches a repository as a mirror remote' do
+        subject
 
-      expect(refs(new_repository.path)).to eq(refs(repository.path))
-    end
+        expect(refs(new_repository.path)).to eq(refs(repository.path))
+      end
 
-    context 'with keep-around refs' do
-      let(:sha) { SeedRepo::Commit::ID }
-      let(:keep_around_ref) { "refs/keep-around/#{sha}" }
-      let(:tmp_ref) { "refs/tmp/#{SecureRandom.hex}" }
+      context 'with keep-around refs' do
+        let(:sha) { SeedRepo::Commit::ID }
+        let(:keep_around_ref) { "refs/keep-around/#{sha}" }
+        let(:tmp_ref) { "refs/tmp/#{SecureRandom.hex}" }
 
-      before do
-        repository.rugged.references.create(keep_around_ref, sha, force: true)
-        repository.rugged.references.create(tmp_ref, sha, force: true)
-      end
+        before do
+          repository.rugged.references.create(keep_around_ref, sha, force: true)
+          repository.rugged.references.create(tmp_ref, sha, force: true)
+        end
 
-      it 'includes the temporary and keep-around refs' do
-        subject
+        it 'includes the temporary and keep-around refs' do
+          subject
 
-        expect(refs(new_repository.path)).to include(keep_around_ref)
-        expect(refs(new_repository.path)).to include(tmp_ref)
+          expect(refs(new_repository.path)).to include(keep_around_ref)
+          expect(refs(new_repository.path)).to include(tmp_ref)
+        end
       end
     end
+
+    context 'with gitaly enabled' do
+      it_behaves_like 'repository mirror fecthing'
+    end
+
+    context 'with gitaly enabled', :skip_gitaly_mock do
+      it_behaves_like 'repository mirror fecthing'
+    end
   end
 
   describe '#remote_tags' do
diff --git a/spec/lib/gitlab/gitaly_client/remote_service_spec.rb b/spec/lib/gitlab/gitaly_client/remote_service_spec.rb
index 69c6f054016265fa865b8371f1137cc52871018b..9d540446532fc394cac59f2d5a644aea254295e9 100644
--- a/spec/lib/gitlab/gitaly_client/remote_service_spec.rb
+++ b/spec/lib/gitlab/gitaly_client/remote_service_spec.rb
@@ -31,4 +31,17 @@ describe Gitlab::GitalyClient::RemoteService do
       expect(client.remove_remote(remote_name)).to be(true)
     end
   end
+
+  describe '#fetch_internal_remote' do
+    let(:remote_repository) { Gitlab::Git::Repository.new('default', TEST_MUTABLE_REPO_PATH, '') }
+
+    it 'sends an fetch_internal_remote message and returns the result value' do
+      expect_any_instance_of(Gitaly::RemoteService::Stub)
+        .to receive(:fetch_internal_remote)
+        .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
+        .and_return(double(result: true))
+
+      expect(client.fetch_internal_remote(remote_repository)).to be(true)
+    end
+  end
 end