040000 tree 0d8fb282c94653ae3de2029e98809f0fa4541708	clang
040000 tree 8bfcceb664d8b757cf3d4d2e1a1bfcb3f7635902	golang
040000 tree 2e9f557cb395cfd5fa0f34f5b4f138a4cd47c1ff	libcxx
040000 tree 6f097f51d76805b52d75d7d9d22d45ce5b5d34f2	python