git checkout previous commit

git revert <commit hash>

# This will destroy any local modifications.
# Don't do it if you have uncommitted work you want to keep.
git reset --hard 0d1d7fc32

# Alternatively, if there's work to keep:
git stash
git reset --hard 0d1d7fc32
git stash pop
# This saves the modifications, then reapplies that patch after resetting.
# You could get merge conflicts, if you've modified things which were
# changed since the commit you reset to.

git checkout <commit>

git checkout <commit hash>	# go to previous commit
git revert <commit hash>  	# revert action of going to previous commit

# This will detach your HEAD, that is, leave you with no branch checked out:
git checkout 0d1d7fc32

git reset --hard HEAD~10
To rollback 10 commits back:

git checkout -b old-state 0d1d7fc32

git checkout <commit hash>