bug#50340: Fix remote-location in vc-git-log-incoming

[Lars Ingebrigtsen <larsi@gnus.org>]

Juri Linkov <juri@linkov.net> writes:

>> But this means that my fix worked, because in vc-git-log-incoming
>> I fixed the first command `git fetch`, but it fails in your case
>> in the second command `git log HEAD..upstream`.
>
> If it works for you, go ahead. I just couldn't make the command work
> (patched or not) with either of the projects I tried it on.

[...]

> I'm not sure. This should work for every backend where log-outgoing
> and log-incoming work, right?
>
> Do remotes feature in branch names the same way in Git, Hg and Bzr?

This was a month ago, and skimming it, it wasn't clear to me what the
status here was -- whether this should be worked more on, or whether
Juri's fix should be pushed.

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