040000 tree d4033e7f18de7abd8087ea757ca466311105466d	bbr
040000 tree 2dad915550d1a73a8cbc8cd8cff1f593df58cffc	bbsim
040000 tree 4d409fc0004a3e294b5b78a69172a988e09c3e3d	bbsimctl
040000 tree 54a7b7e51e39d446708ee6e2aa5f9ac18bb2b8db	common