docs: ja_JP: process: translate 'Obtain a current source tree'
Translate the "Obtain a current source tree" section in
Documentation/translations/ja_JP/process/submitting-patches.rst.
Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org>
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260127130155.16935-1-weibu@redadmin.org>
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