Your comments

i gave up waiting for this feature and just don't use textastic anymore ... wasted money ...

awesome ... so it's "just" a matter of getting necessary features in libgit2. thanks for clarifying things!

regexp search/replace would be really nice, but only, if it's full featured: buffers would in my opinion be a must for regexp-based replace.
transparent keyboard like in issh would be awesome ... !
yeah, a simple git "console" would be enough (at the beginning). a fully featured gui like git-tower as part of textastic would really be overkill. i would pay for a git plugin, too.