will the use of GitHub ever be fully explained?

[Chris H]

Greetings fellow maintainers,
 I'd like to update a port that's moved to GitHub.
I pretty well understand the use MASTER_SITES where GitHub
is concerned *except* where the need to use GIT_HASH for
GH_TAGNAME, is concerned. Sure, I know how to put it there.
But I am unclear how that affects the PORTVERSION entry.
Does anyone have an example they'd be willing to share?
Please?

What I'd like to accomplish:

PORTVERSION=	2.0

USE_GITHUB=	yes

GH_TAGNAME=	95f841f

But I don't think this will work.

Thanks!

--Chris

--