diff --git a/scripts/cmake/version.cmake b/scripts/cmake/version.cmake
index a82678596..08d624d12 100644
--- a/scripts/cmake/version.cmake
+++ b/scripts/cmake/version.cmake
@@ -27,10 +27,11 @@ message(STATUS "version.cmake starting SOF build at ${build_start_time} UTC")
 # moving target: the latest target branch. In that case the SHA version
 # gathered by git describe is disposable hence useless. Only the
 # --parents SHA are useful.
-message(STATUS "Building git commit with parent(s):")
+message(STATUS "Building SOF git commit with parent(s):")
 # Note execute_process() failures are ignored by default (missing git...)
 execute_process(
-	COMMAND git log --parents --oneline --decorate -n 1 HEAD
+	COMMAND git -C "${CMAKE_CURRENT_SOURCE_DIR}"
+		log --parents --oneline --decorate -n 1 HEAD
 	)
 
 
@@ -134,6 +135,7 @@ function(sof_check_version_h)
 		"#define SOF_SRC_HASH 0x${SOF_SRC_HASH}\n"
 	)
 
+	# Regenerating the same file would cause a full rebuild.
 	if(EXISTS "${VERSION_H_PATH}")
 		file(READ "${VERSION_H_PATH}" old_version_content)
 		if("${header_content}" STREQUAL "${old_version_content}")