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b8cd1bb7 ("t6036, t6043: increase code coverage for file collision handling", 2018-11-07) uses this GNU extension that is not available in a POSIX complaint cp. In this particular case, there is no need to use the option, as it is just copying a single file to create another file. Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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