040000 tree 6039ee08f2d849aa4fae122d5b4605f87b6d3e05	bbr
040000 tree b0eb547d896039ce12fd111c043cad525432646b	bbsim
040000 tree 99841d1c11ff269663d7599f76ba7a32e6e12cad	bbsimctl
040000 tree df4d5b1fdc4c127e3200ade308df0f865f28bb93	common