Yeah sorry, thought there was a problem with the 'pkgver' function, but I've now verified that that it is correct.

There instead appears to be a problem with my aur helper (yay, maybe due to the package being flagged out of date?), because it refused to update it while other -git packages work fine.

On 7 June 2019 11:40:28 CEST, Jelle van der Waa <jelle@vdwaa.nl> wrote:
On 06/07/19 at 09:10am, notify--- via aur-requests wrote:
0x76 [1] filed a orphan request for ranger-git [2]:

Package version does not update whenever the git repo actually
updates, this is not expected of a `-git` package.

This is not expected from a git repo, when you makepkg -s it will pull
the latest HEAD.

Package is also already flagged out of date but the maintainer hasn't
updated this (and other of his outdated) packages in some time.

There is no need to update a -git package for a new commit in git :)