040000 tree 18719754fbe0a1c8f40c3fbab8bd4543a04c3cdc	TextIO Read
100644 blob e671ddcd40957ed2283d7d0d85e20b3ec0c37a5b	lesson-info.yaml
100644 blob 8ed5ab3645e44a91c000762d7539a37234c3fcfe	lesson-remote-info.yaml