diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 40586ca23b..dd0bcaaa05 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -156,9 +156,7 @@ endif()
 # git SHA1 hash
 #===============================================================================
 
-execute_process(COMMAND git log -1
-                COMMAND head -n 1
-                COMMAND cut -c8-
+execute_process(COMMAND git rev-parse -q HEAD
                 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
                 RESULT_VARIABLE GIT_SHA1_SUCCESS
                 OUTPUT_VARIABLE GIT_SHA1