[MacPorts] #56975: livecheck broken in GitHub PortGroup

[MacPorts]

#56975: livecheck broken in GitHub PortGroup
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  Reporter:  l2dy    |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:          |
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Comment (by cjones051073):

 Well, my thinking was more to not change anything beyond where it is
 needed, hence the new livecheck option that defaults to doing nothing, and
 is only used by the GitHub group.

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Ticket URL: <https://trac.macports.org/ticket/56975#comment:10>
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