[MacPorts] #61184: istioctl: build fails due to "not a git repository"

[MacPorts]

#61184: istioctl: build fails due to "not a git repository"
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 Reporter:  amake   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  istioctl
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 Please see the attached log.

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Ticket URL: <https://trac.macports.org/ticket/61184>
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