roll back main github code example

Example 1: revert git commit

git revert <the_commit_hash>

Example 2: github restore previous commit

# syntax
git revert <commit>
# example
git revert 99a5c5905e12c74725bae64c61efce140662ce24
# where 99a5c59... is the commit (you can check it on github)

Example 3: git revert all commits to pervious commit

git revert --no-commit <commithash>..HEAD #revert changes in range of commits from head to back to that commit hash