040000 tree 9133f8f41a39a273e0ee9cb909f7100cb9287c8a	bbr
040000 tree ffb99fff01d293a6f183ab6acbe9664d2f8fd0de	bbsim
040000 tree 7cc7f027f13280eab63bd4854f45c87b3b74e80a	bbsimctl
040000 tree 64d7a15f003031121fdd919f979b4d6a4eb21598	common