[MacPorts] #66120: `port selfupdate` fails when updating a local ports tree using `/usr/bin/git`

[MacPorts]

#66120: `port selfupdate` fails when updating a local ports tree using
`/usr/bin/git`
-------------------------+--------------------
  Reporter:  halostatue  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  base        |    Version:  2.8.0
Resolution:              |   Keywords:
      Port:              |
-------------------------+--------------------
Changes (by reneeotten):

 * priority:  High => Normal


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Ticket URL: <https://trac.macports.org/ticket/66120#comment:1>
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