Which Git commit stats are easy to pull

First, you don't have to pull anything (as in network pull), because you have the whole repository and the whole history locally. I'm pretty sure there are tools that will give you statistics, but sometimes you can just be creative with the command lines. For instance, this (just out of my head) will give you the number of commits per user:

git log --pretty=format:%ae \
| gawk -- '{ ++c[$0]; } END { for(cc in c) printf "%5d %s\n",c[cc],cc; }'

Other statistics you asked for may need more thought put into it. You may want to see the tools available. Googling for git statistics points to the GitStats tool, which I have no experience with and even less idea of what it takes to get it run on windows, but you can try.

Actually, git already has a command for this:

git shortlog

in your case, it sounds like you're interested in this form:

git shortlog -sne

See the --help for various options.

You may also be interested in the GitStats project. They have a few examples, including the stats for the Git project. From the GitStat main page:

Here is a list of some statistics generated currently:

• General statistics: total files, lines, commits, authors.
• Activity: commits by hour of day, day of week, hour of week, month of year, year and month, and year.
• Authors: list of authors (name, commits (%), first commit date, last commit date, age), author of month, author of year.
• Files: file count by date, extensions
• Lines: Lines of Code by date