mdn-translation-ja-mcp
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    MdnTransCommitGetErrorCode:
        | "SOURCE_MISSING"
        | "SOURCE_NOT_FILE"
        | "NOT_A_GIT_REPOSITORY"
        | "GIT_COMMAND_FAILED"
        | "SOURCE_UNTRACKED"
        | "PATH_OUTSIDE_CONTENT_ROOT"

    getEnUsSourceCommitHash / runMdnTransCommitGet 共通の失敗コード