040000 tree c178ac196daa225bc374889ba8573a238aecb02f	bbr
040000 tree 56ae0a132a2781c5f551b9fb7384e285f7a3c829	bbsim
040000 tree 929ffdc2aa93e802487fcccff86d0200c68a804b	bbsimctl
040000 tree 033f08891aef326d2e557c3868d2ee7c15ddefc2	common