diff -Naur ros-humble-libyaml-vendor-1.2.2_org/CMakeLists.txt ros-humble-libyaml-vendor-1.2.2/CMakeLists.txt
--- ros-humble-libyaml-vendor-1.2.2_org/CMakeLists.txt	2023-04-26 17:16:59.663537006 +0800
+++ ros-humble-libyaml-vendor-1.2.2/CMakeLists.txt	2023-04-26 17:30:31.211425347 +0800
@@ -61,9 +61,7 @@
   endif()
   include(ExternalProject)
   externalproject_add(libyaml-0.2.5
-    GIT_REPOSITORY https://github.com/yaml/libyaml.git
-    GIT_TAG 2c891fc7a770e8ba2fec34fc6b545c672beb37e6  # 0.2.5
-    GIT_CONFIG advice.detachedHead=false
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/libyaml-0.2.5.tar.gz
     # Suppress git update due to https://gitlab.kitware.com/cmake/cmake/-/issues/16419
     # See https://github.com/ament/uncrustify_vendor/pull/22 for details
     UPDATE_COMMAND ""