040000 tree 3c973924ebbad22f7150b1b1e02b80af3676b3b6	bbr
040000 tree 766b700d4d53fcb87bf7a72288e2b69ea64edfda	bbsim
040000 tree 78ab026ff4740042459c217cfcf7e262f93871c6	bbsimctl
040000 tree 44cd31c8c054410b9601236b449824535b709c9b	common