bug#59131: gnu: emacs-magit: Tests fail.

[Kyle Meyer <kyle@kyleam.com>]

paren--- via Bug reports for GNU Guix writes:

>   $ guix describe
>   Generation 240	Nov 08 2022 18:38:30	(current)
>   guix c52cdd1
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: master
>     commit: c52cdd18d6f8dddd69dfb1f8b5214a0db6ebb562
> [...]
>
>   2 unexpected results:
>      FAILED  magit-get
>      FAILED  magit-toplevel:submodule
>
>   1 skipped results:
>     SKIPPED  magit-toplevel:tramp
>
>   make: *** [Makefile:111: test] Error 1
>
> This appears to have been caused by commit 83ede5a ("gnu: git: Update to 2.38.1.").

Thanks for posting this.  This recently started failing on Magit's CI,
but nobody had looked into it too deeply yet.  Your message suggested
that bisecting Git v2.38.0..v2.38.1 would be a good place to start.

That pointed to this being fallout from Git's a1d4f67c12 (transport:
make `protocol.file.allow` be "user" by default, 2022-10-01), and the
two failures above are now resolved by Magit's 36059e0b (test: Set
protocol.file.allow=always to restore old Git behavior, 2022-11-08).

(In terms of fixing Guix's emacs-magit build, 36059e0b applies cleanly
to v3.3.0's tree.)