Revert any of the last take pull or commit or anything.

1. git reflog

HEAD@{0}: pull heroku2 master: Merge made by the 'recursive' strategy.
a08fd72 HEAD@{1}: commit: add new banner img
11866dc HEAD@{2}: commit: add new banner img
5fd0584 HEAD@{3}: commit: changes in dislike func.
857d9ba HEAD@{4}: pull origin master: Merge made by the 'recursive' strategy.
e08788d HEAD@{5}: commit: push upload
8d9b90a HEAD@{6}: commit: visible fav icon in chrome
06b307f HEAD@{7}: pull origin master: Merge made by the 'recursive' strategy.
074fde8 HEAD@{8}: commit: notify for request


2. Revert pull or commit by setting HEAD

 git reset HEAD@{1}

Thanks,

Hemant Gupta