bug#21457: 25.0.50; vc-test-git03-working-revision test fails

[Eli Zaretskii]

> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: 21457@debbugs.gnu.org
> Date: Sat, 12 Sep 2015 18:54:29 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Do you know whether "HEAD" is indeed what the latest Git should return
> > in this case, though?
> 
> Unrecognized arguments are printed unchanged.

OK, I fixed my script, and vc-tests.el now passes without any changes.

Sorry for wasting everybody's time.