[MacPorts] #62311: portfetch: require external svn on >= Catalina

[MacPorts]

#62311: portfetch: require external svn on >= Catalina
---------------------+----------------------
  Reporter:  kencu   |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  base    |    Version:
Resolution:          |   Keywords:  haspatch
      Port:          |
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Changes (by kencu):

 * keywords:   => haspatch


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Ticket URL: <https://trac.macports.org/ticket/62311#comment:1>
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