Reset to Remote Branch

git reset --hard origin/master

This command discards all staged and unstaged changes, and makes your current local branch exactly match the remote origin/master branch.

Reverting to a Specific Commit

If you want to revert to a specific commit (e.g., 5555dddd), first ensure you have no uncommitted changes that you want to keep:

# Reset the index and working tree to the desired tree
git reset --hard 5555dddd

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

Replacing a Remote Branch with Another Branch

When you need to completely replace one branch with another (e.g., updating staging with new_release):

# Checkout to new_release
git checkout new_release

# Delete local staging
git branch -D staging

# Create new local staging from new_release
git checkout -b staging

# Push new staging (now copy of new_release) to remote
git push origin staging -f