README.md

@@ -6,6 +6,10 @@
 编译命令
 
 ```bash
+git clone git@github.com:ClickHouse/ClickHouse.git -b 23.4
+cd ClickHouse
+git submodule update --init --recursive
+mkdir build && cd build 
 cmake .. -DCMAKE_CXX_COMPILER=`which clang++` -DCMAKE_C_COMPILER=`which clang` -DCMAKE_BUILD_TYPE=release -DCMAKE_BUILD_WITH_INSTALL_RPATH=ON
 ninja
 ```