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040000 tree bc7bf8d75a6e706ddf15c9f1c8f3e62cbe1d443f	linux
040000 tree fec9ea1c5fd5fe7d06cd243c0c9d1716811e4b5a	linux_blemesh
040000 tree 05bcfcc7c64c4736a5e063df9544d372204f1a63	nuttx