bug#19049: 25.0.50; emacs-repository-get-version doesn't work with git

[Lars Magne Ingebrigtsen]

Ulrich Mueller <ulm@gentoo.org> writes:

> The function tries to determine the version by calling:
>
>    git log -1 --pretty=format:%N
>
> According to git documentation, format:%N will output "commit notes"
> which will be empty usually. Presumably, this should be format:%H, in
> order to output the commit hash. Patch is included below.

Thanks; applied.

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