Constant C2S_GIT_OPEN 

pub const C2S_GIT_OPEN: u8 = 0xA0;

Open (discover) a repository: [0xA0][nonce:2][flags:1][refs_latency_ms:2][status_latency_ms:2][path_len:2][path:N] path is plain UTF-8 (client-chosen filesystem location, like FS_SYNC).