git commit

git commit -a -m "The Commit message"

# Reset the index and working tree to the desired tree
# Ensure you have no uncommitted changes that you want to keep
git reset --hard 56e05fced

# Move the branch pointer back to the previous HEAD
git reset --soft HEAD@{1}

git commit -m "Reverting to the state of the project at f414f31"

git add index.html css/styles.css
git add .
git commit -m "Change titles and styling on homepage"

git checkout <commit>

$ git commit -m"Fix typo in introduction to user guide"

git commit -a

git add index.html css/styles.css
git commit -m "Change titles and styling on homepage"

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