[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:  High        |  Milestone:
Component:  base        |    Version:  2.8.0
 Keywords:              |       Port:
------------------------+--------------------
 When the `git` port is not installed, I have configuration in my
 `.gitconfig` that is not recognized by Apple’s default `/usr/bin/git`.

 {{{
 $ sudo port -v selfupdate
 --->  Updating MacPorts base sources using rsync

 Willkommen auf dem RSYNC-server auf ftp.fau.de.
 Nicht all unsere Mirror sind per rsync verfuegbar.

 Welcome to the RSYNC daemon on ftp.fau.de.
 Not all of our mirrors are available through rsync.


 receiving file list ... done
 ./

 sent 66 bytes  received 98 bytes  109.33 bytes/sec
 total size is 113716736  speedup is 693394.73
 MacPorts base version 2.8.0 installed,
 MacPorts base version 2.8.0 downloaded.
 --->  Updating the ports tree
 Synchronizing local ports tree from file:///Users/austin/ports
 error: unsupported value for gpg.format: ssh
 fatal: bad config variable 'gpg.format' in file
 '/Users/austin/.config/git/signatures' at line 3
 Command failed: /usr/bin/git pull --rebase --autostash
 Exit code: 128
 Syncing local Git ports tree failed
 Synchronizing local ports tree from
 rsync://rsync.macports.org/macports/release/tarballs/ports.tar

 Willkommen auf dem RSYNC-server auf ftp.fau.de.
 Nicht all unsere Mirror sind per rsync verfuegbar.

 Welcome to the RSYNC daemon on ftp.fau.de.
 Not all of our mirrors are available through rsync.


 receiving file list ... done
 ./

 sent 68 bytes  received 99 bytes  111.33 bytes/sec
 total size is 100559872  speedup is 602154.92
 Creating port index in
 /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports

 Total number of ports parsed:   0
 Ports successfully parsed:      0
 Ports failed:                   0
 Up-to-date ports skipped:       29998

 Error: Couldn't sync the ports tree: Synchronization of 1 source failed
 Error: Follow https://guide.macports.org/#project.tickets if you believe
 there is a bug.
 Error: /opt/local/bin/port: port selfupdate failed: Couldn't sync the
 ports tree: Synchronization of 1 source failed
 }}}

 The key error is `bad config variable 'gpg.format'`.

 {{{
 error: unsupported value for gpg.format: ssh
 fatal: bad config variable 'gpg.format' in file
 '/Users/austin/.config/git/signatures' at line 3
 Command failed: /usr/bin/git pull --rebase --autostash
 }}}

 This goes away when the `git` port is **active**, because it’s a modern
 version of `git` that supports SSH keys for signatures. It’s *possible*
 that this is fixed with macOS Ventura, but this should be documented at a
 minimum and it may be worth bundling a more recent version of `git` in
 available packages.

-- 
Ticket URL: <https://trac.macports.org/ticket/66120>
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