(List
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('USAGE', {[SQ <LIT_CHARS "[--max-count=<n>] [<since>..<limit>] [--pretty=<format>] [git-rev-list options]">]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SUBDIRECTORY_OK', {[SQ <LIT_CHARS Yes>]})])
  (Com {[LIT_CHARS .]} {[LIT_CHARS git-sh-setup]})
  (AndOr OP_OR_IF
    (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('revs', {[ComSub (Com {[LIT_CHARS git-rev-parse]} {[LIT_CHARS --revs-only]} {[LIT_CHARS --no-flags]} {[LIT_CHARS --default]} {[LIT_CHARS HEAD]} {[DQ [VarSub @]]})]})])
    (Com {[LIT_CHARS exit]})
  )
  (AndOr OP_OR_IF
    (Com {[LIT_OTHER "["]} {[DQ [VarSub revs]]} {[LIT_OTHER "]"]})
    (Com {[LIT_CHARS die]} {[DQ [LIT_CHARS "No HEAD ref"]]})
  )
  (Pipeline
    (Com {[LIT_CHARS git-rev-list]} {[LIT_CHARS --pretty]} {[ComSub (Com {[LIT_CHARS git-rev-parse]} {[LIT_CHARS --default]} {[LIT_CHARS HEAD]} {[DQ [VarSub @]]})]})
    (Com {[VarSub PAGER test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS less]}]}
        more_env=[('LESS', {[LIT_CHARS -S]})]
    )
  )
)