040000 tree d4033e7f18de7abd8087ea757ca466311105466d	bbr
040000 tree 47a4f67dfc47a5db8ff39305503618e7b0abb17e	bbsim
040000 tree d840b309f2d4fcb831fa2b909ad7ac36e31777d9	bbsimctl
040000 tree a6f02464f527ae81382fcc7cd85dac3ed1b2810b	common