It's easy to use library without using command line git utility. Enough to fast due to libgit2 and really easy to use like other Perl module. I think document and example are needed but test code is good point to start. I really recommend this module if you have to handle git repository directly! :-)
On the top of my list of things to try. Using git in scripts all the time, I'd rather get something more usable than a screen dump to parse.