cmake fetchcontent_populate(URL) examples

erincatto/box2d samples/CMakeLists.txt :32 

FetchContent_Populate(imgui
	URL https://github.com/ocornut/imgui/archive/refs/tags/v1.91.3.zip
	SOURCE_DIR ${CMAKE_SOURCE_DIR}/build/imgui
)

ispc/ispc superbuild/CMakeLists.txt :438 

FetchContent_Populate(ccache
    ${FETCH_CONTENT_QUIET_OPTION}
    URL ${CCACHE_URL}
    SOURCE_DIR ccache
    )