Rollback of git commands

Could a rollback log be implemented in git? It would make things way
easier when you screw something up.You'd only roll back things that
impacted the object store, not things like checkout.

stg is also starting to store significant state in the .git directory.
It may be better to move this state into a git object. That would
allow the state history to be tracked and rollback be implemented.

The same logic can be applied to moving all tracking information in
the .git directory into objects. You then just need to track a single
SHA1 pointing to the .git config info in the object db.

Rollback in the object store is simple, just move the SHA1 in the
config files back to where it was before the action was done. What we
are missing is a way to rollback the config files.

-- 
Jon Smirl
jonsmirl@gmail.com