diff --git a/CMakeLists.txt b/CMakeLists.txt
index 332b361..3fce2ec 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,8 +27,9 @@ execute_process(
   OUTPUT_VARIABLE git_dirty_check_out
 )
 
-if("${git_version_check_ret}" EQUAL 0)
-  set(tini_VERSION_GIT " - git.${tini_VERSION_GIT}")
+if(NOT "${TINI_COMMIT}" STREQUAL "")
+  set(tini_VERSION_GIT "${TINI_COMMIT}")
+elseif("${git_version_check_ret}" EQUAL 0)
   if(NOT "${git_dirty_check_out}" STREQUAL "")
     set(tini_VERSION_GIT "${tini_VERSION_GIT}-dirty")
   endif()
@@ -36,6 +37,10 @@ else()
   set(tini_VERSION_GIT "")
 endif()
 
+if(NOT ${tini_VERSION_GIT} STREQUAL "")
+  set(tini_VERSION_GIT " - git.${tini_VERSION_GIT}")
+endif()
+
 # Flags
 include(CheckCSourceCompiles)