git move to commit code example

Example 1: set head of branch at specific commit

# You can make master point at a specific commit this way
git checkout master
git reset --hard <commit-hash>

# git reset --hard command will throw away any uncommitted changes 
# (i.e. those just in your working tree or the index).

Example 2: git move back one commit

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