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Instead of having each builtin transport asking for which protocol version the user has configured in 'protocol.version' by calling `get_protocol_version_config()` multiple times, factor this logic out so there is just a single call at the beginning of `git_connect()`. This will be helpful in the next patch where we can have centralized logic which determines if we need to request a different protocol version than what the user has configured. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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