On Mon, Sep 06 2021, Marius Bakke wrote:

> * The new resolve-reference condition actually returns.
> * The transformation code now use the same heuristics as
>   resolve-reference to check for the 'describe' style.
>
> I'm now reasonably confident in these patches and will push in a day or
> two unless there are objections.  :-)
>
> Marius Bakke (2):
>   git: 'resolve-reference' handles 'git describe'-style commit IDs.
>   transformations: 'git describe' style commit IDs are used as version.

I haven’t looked at the patch itself, but maybe it’s worthing mentioning
this in the “9.1.2 Package Transformation Options” section in the manual?