Tests/RunCMake/DependencyProviders/Recurse.cmake - external/github.com/Kitware/CMake - Git at Google

 include(FetchContent)

 set(FETCHCONTENT_QUIET NO)

 FetchContent_Declare(SomeDep
   DOWNLOAD_COMMAND ${CMAKE_COMMAND} -E echo "Download command called"
 )
 FetchContent_MakeAvailable(SomeDep)
	include(FetchContent)

	set(FETCHCONTENT_QUIET NO)

	FetchContent_Declare(SomeDep
	DOWNLOAD_COMMAND ${CMAKE_COMMAND} -E echo "Download command called"
	)
	FetchContent_MakeAvailable(SomeDep)