Consider using NGit for performance.

[otac0n]

We have quite a performance penalty from shelling out to the git.exe executable for every action

It may be worthwhile to use NGit instead of Git.exe.

[drwelden]

I wasn't aware someone was doing the jgit port again. Very cool. Although, I wonder how much performance benefit there could be derived from a true C# implementation instead of one that is just translated code...

[otac0n]

I'm not sure that it would be worth the effort to do that, especially when this port exists. I was originally planning on doing it myself, but decided against it in light of how well NGit works.

[otac0n]

There is another option here: libgit2sharp

This one seems to be a better bet than NGit at the moment.