message: install dummy hook into ginkgo git directory
diff: find_package(Git QUIET)
  if(GIT_FOUND)
  execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --git-path hooks
  - WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
  + WORKING_DIRECTORY ${Ginkgo_SOURCE_DIR}
  OUTPUT_VARIABLE Ginkgo_GIT_HOOKS_DIR
  OUTPUT_STRIP_TRAILING_WHITESPACE)
  # If it is not in git, give an error and return
  @@ -9,7 +9,7 @@ if(GIT_FOUND)
  message(STATUS "Ginkgo is not in a git repository, so no git hook was installed")
  return()
  endif()
  - get_filename_component(Ginkgo_GIT_HOOKS_DIR ${Ginkgo_GIT_HOOKS_DIR} REALPATH BASE_DIR ${CMAKE_SOURCE_DIR})
  + get_filename_component(Ginkgo_GIT_HOOKS_DIR ${Ginkgo_GIT_HOOKS_DIR} REALPATH BASE_DIR ${Ginkgo_SOURCE_DIR})
  if(EXISTS "${Ginkgo_GIT_HOOKS_DIR}")
  set(ADD_HOOK FALSE)
  set(HOOK_LOCATION "${Ginkgo_GIT_HOOKS_DIR}/pre-commit")
  