cmake fetchcontent_declare(13) examples

TartanLlama/expected CMakeLists.txt :70 

FetchContent_Declare(Catch2 URL
  https://github.com/catchorg/Catch2/archive/v2.13.10.zip)

AOMediaCodec/libavif cmake/Modules/LocalLibargparse.cmake :22 

FetchContent_Declare(
    libargparse
    GIT_REPOSITORY "https://github.com/kmurray/libargparse.git"
    GIT_TAG ${AVIF_LIBARGPARSE_GIT_TAG}
    # TODO(vrabaud) remove once CMake 3.13 is not supported anymore.
    PATCH_COMMAND git apply --ignore-whitespace "${AVIF_SOURCE_DIR}/ext/libargparse.patch"
    UPDATE_COMMAND ""
)

intrepidcs/libicsneo bindings/python/CMakeLists.txt :9 

FetchContent_Declare(
    pybind11
    GIT_REPOSITORY https://github.com/pybind/pybind11.git
    GIT_TAG v2.13.6
)

neocmakelsp/neocmakelsp experiment_assets/nheko.cmake :255 

FetchContent_Declare(
	qt5keychain
	GIT_REPOSITORY https://github.com/frankosterfeld/qtkeychain.git
	GIT_TAG v0.13.1)

neocmakelsp/neocmakelsp experiment_assets/test3.cmake :227 

FetchContent_Declare(
	qt5keychain
	GIT_REPOSITORY https://github.com/frankosterfeld/qtkeychain.git
	GIT_TAG v0.13.1)