[MacPorts] #64081: Can't fetch anything from github on old macOS

[MacPorts]

#64081: Can't fetch anything from github on old macOS
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  Reporter:  catap   |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:          |
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Comment (by catap):

 I can't because `error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1
 alert protocol version` means that remote server things that my SSL
 settings too weak. I can't do anything except of suggest to use different
 version of `curl` here.

 Do you know how I can suggest `port` to use `/opt/loca/bin/curl`?

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Ticket URL: <https://trac.macports.org/ticket/64081#comment:3>
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