040000 tree 61d902ae223e7e3e1d3b99d7d2dd644c36d12440	clang
040000 tree 1129706e464402d46780d1d688ac8ca56f4de198	golang
040000 tree 5986d135f758a3dfc37e33555449443622128b76	libcxx
040000 tree 8ba6f0fcc4fb3196c85c83e16174814968f0241c	python