Incorrect commit oid's when aggregated from commit.history() #81

var git = require('nodegit'),
    async = require('async');

// Open the repository in the current directory.
git.repo('.git', function(error, repository) {
  if (error) {
    throw error;
  }

  // Use the master branch.
  repository.branch('master', function(error, branch) {
    if (error) {
      throw error;
    }

    branch.history().on('end', function(err, commits){
        commits.forEach(function(commit){
                 // Print out `git log` emulation.
            async.series([
                function(callback) {
                    commit.sha(callback);
                },
                function(callback) {
                    commit.time(callback);
                },
                function(callback) {
                    commit.author(function(error, author) {
                        author.name(callback);
                    });
                },
                function(callback) {
                    commit.author(function(error, author) {
                        author.email(callback);
                    });
                },
                function(callback) {
                    commit.message(callback);
                }
            ], function printCommit(error, results) {
                console.log('SHA ' + results[0]);
                console.log(new Date(results[1] * 1000));
                console.log(results[2] + ' <' + results[3] + '>');
                console.log(results[4]);
            });
        });
    });
  });
});