040000 tree 1aa4387e199130f286a185da617542dc467ef1bc	bbr
040000 tree 92570e244451652f78d662c03d07507776308cc3	bbsim
040000 tree 0b0e54bd8a1ecec5bca5768fedebb9d39d8092e8	bbsimctl
040000 tree 5876a8b263ca4deeb69526d7131dad299b3aad4a	common