I'm going to be brutally honest here, but don't worry I'm not a connoisseur of these things! I'm actually probably close to your target audience.

I've been using git as a single developer in a very timid way for years. This is my public repo https://github.com/marshray . I know how to 'add' and 'commit -m ...' and 'push'. Anything else I usually have to look up. Just yesterday I actively collaborated for the first time and did a fastforward pull and a merge a few times. Scared me to death I was going to screw something up because we had a hard deadline.

When I followed the link on HN, I didn't know what it was. I thought you might be starting a GitHub competitor service. It's a pretty design, but the first two paragraphs I skimmed over. I already know what git is or I wouldn't be on the site. I actually know quite a bit about how git compares to those other products because I've used most of them. But the graph with the stack of books on the right reminds me "gee I know exactly how to do that in Perforce, I wish it would just sink in how to do it with git. The branch diagrams still look like Feynman diagrams to me and I don't know quantum physics".

I saw the 'About, Documentation, Downloads, Community'. All very obvious categorizations, but here's was my first impression:

About - yes I've figured out by now this is a website about git, and already know what git is about

Downloads - I've never downloaded git except via a package manager so this is probably not useful to me

Documentation - ok that could be helpful, but I have no sense at this point if it's any good. You know a lot of sites amount to mostly just manpages.

Community get involved! - I'm not so invested in git that I would want to join a list about it. I feel grateful for the community because when I have questions a web search usually turns up an appropriate discussion. But usually it's a blog post or stack overflow. I don't recall a mailing list or a forum post being helpful, but probably it has and I've just forgotten.

I saw the picture of the book. "Oh yes, the black and yellow publisher" I thought. Its bold colors visually dominated everything else on the page. I suspected that the site may be a guy who wrote a book on git and this is his personal site.

I saw all the list of logos of companies using git and thought "I wonder if he got permission for all of those, wow that must have taken a lot of emails". But that's just how my mind works.

At this point I closed the page, not having any pressing need to interact or explore the site.

I totally didn't notice the Mac on the right hand side.

I read the HN discussion a little bit. Mostly I found myself replying to the guy who said the slogan (which I didn't even notice) was reinforcing gender stereotypes. Reading a few more comments it starts to dawn on me: "OH! This is that same git-scm site I think I've been to before. The one that had the good manual on how to use git in some practical situations..." I remembered it fondly, though not very clearly because I wasn't a very frequent visitor.

I see someone mention in an HN comment that a Mac appears when Javascript is disabled. I had totally tuned it out before but now it looks ridiculous. Why in the world would the primary choice be to download for Mac? Why would the only other platform download be for Windows? (But it's good to know there may be a supported option for Windows if I ever need it.)

To explore further, I click on 'Documentation' as it's the only link that remotely seems like something useful to my forseeable needs. My eyes go to the picture of the book "Reference manual" OK there's the printout of the man pages I guess. Scanning down I see "Getting started, Git basics, ... yawn standard stuff"

For some reason, I scroll down a bit. WOW! brightly colored business cards! "Git Basics What is version control?" The title seems useless, but I'm more focused on trying to figure out what these very visually distinctive rectangles are doing below the fold on a table of contents. OH WOW these are Videos! Earlier today I'd had a passing thought about watching some video on git when I was at O'Reilly's site for DRM-free day. They'd had a 6 hour video you could download for $40 or something. That wasn't in my price range, but these videos could be worth watching.

So sorry if I didn't pick up on the visual appeal of your redesign, but I hope my best effort at describing the state of my mind in retrospect will be helpful to you or others in your web design endeavors.