diff --git a/cmake/GetGitRevisionDescription.cmake b/cmake/GetGitRevisionDescription.cmake
index a08895c64..d3873387d 100644
--- a/cmake/GetGitRevisionDescription.cmake
+++ b/cmake/GetGitRevisionDescription.cmake
@@ -143,7 +143,7 @@ function(get_git_head_revision _refspecvar _hashvar)
             string(REGEX REPLACE "gitdir: (.*)$" "\\1" git_worktree_dir
                                  ${worktree_ref})
             string(STRIP ${git_worktree_dir} git_worktree_dir)
-            _git_find_closest_git_dir("${git_worktree_dir}" GIT_DIR)
+            set(GIT_DIR "${git_worktree_dir}")
             set(HEAD_SOURCE_FILE "${git_worktree_dir}/HEAD")
         endif()
     else()