how to reset a commit code example

Example 1: git undo commit

# Uncommit the changes
git reset --soft HEAD~1

# Completely delete the changes
git reset --hard HEAD~1

Example 2: git reset to commit

# reset to specefic commit
git reset --hard <commit id>

# to go back one step 
git reset --hard HEAD~1

# note: use --soft to keep file changes

Example 3: revert last commit

git reset HEAD~

Example 4: reset to commit

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