040000 tree 3c52a3805560a91c90a6499fb3208b615194b691	app
040000 tree c010c7fd9c86d5ce993148f1bb335a46d17e6403	device
040000 tree 7153c73a86ebcb1006f645f83590d8c7910cfa01	host
040000 tree c1de99f9a6b82d0a85104c5cf1595d95ca6aca7a	sample
040000 tree b61ec13dcdc198d4e79dd74078fdc5c13dd62a33	topo