Unstashes changes from current branch for branch sync.
        Requires prior code setting self.stash_index.

def unstash_it(self, sync=False):
        """
        Unstashes changes from current branch for branch sync.
        Requires prior code setting self.stash_index.
        """
        if self.stash_index is not None:
            return self.git_exec(
                ['stash', 'pop', 'stash@{{{0}}}'.format(self.stash_index)])