Do not index files starting with git:

src/message_handler.cc

@@ -147,3 +147,7 @@ void EmitSemanticHighlighting(QueryDatabase* db,
     out.params.symbols.push_back(entry.second);
   IpcManager::WriteStdout(IpcId::CqueryPublishSemanticHighlighting, out);
 }
+
+bool ShouldIgnoreFileForIndexing(const std::string& path) {
+  return StartsWith(path, "git:");
+}

src/message_handler.h

@@ -78,3 +78,5 @@ void EmitSemanticHighlighting(QueryDatabase* db,
                               SemanticHighlightSymbolCache* semantic_cache,
                               WorkingFile* working_file,
                               QueryFile* file);
+
+bool ShouldIgnoreFileForIndexing(const std::string& path);

src/messages/text_document_did_open.cc

@@ -24,6 +24,9 @@ struct TextDocumentDidOpenHandler
 
     Timer time;
     std::string path = request->params.textDocument.uri.GetPath();
+    if (ShouldIgnoreFileForIndexing(path))
+      return;
+
     WorkingFile* working_file =
         working_files->OnOpen(request->params.textDocument);
     optional<std::string> cached_file_contents =

src/messages/text_document_did_save.cc

@@ -22,6 +22,9 @@ struct TextDocumentDidSaveHandler
     : BaseMessageHandler<Ipc_TextDocumentDidSave> {
   void Run(Ipc_TextDocumentDidSave* request) override {
     std::string path = request->params.textDocument.uri.GetPath();
+    if (ShouldIgnoreFileForIndexing(path))
+      return;
+
     // Send out an index request, and copy the current buffer state so we
     // can update the cached index contents when the index is done.
     //