Props for ingenuity but it scares me a little bit :)
Not a huge fan of any Git GUIs for editing/adding/whatever, I’ve always preferred the CLI, except for looking at the commit history of a repo or for searching.
See also TortoiseGit (screenshots), another Windows-Explorer-centered Git client. It adds overlay icons to files in the Explorer to indicate their status, and lets you perform Git actions such as staging files or viewing the log via a “TortoiseGit” submenu in the context menu of every file and directory. It adds no keyboard shortcuts like those added by this AutoHotkey script, focusing instead on being accessible to new users.
I’ve never used TortoiseGit, but I found TortoiseSVN, which has the same type of interface, quite usable when I had to use SVN in 2011. If I had to use SVN nowadays I would probably use git-svn and Tower instead.