040000 tree 2ff6c141f4a78d08c7a9e87adeab9a844b741e9f	bbr
040000 tree a53c05505ded08dca30c9017ac76430a23ee639d	bbsim
040000 tree dae819eaed5d941a44b0c16783a0c79cfe8bdfd9	bbsimctl
040000 tree 5876a8b263ca4deeb69526d7131dad299b3aad4a	common