# Rename origin to old-origin
git remote rename origin old-origin

# Add new origin url
git remote add origin <new-remote>

# Fetch all branches and tags from old-origin
git fetch old-origin --prune

# Push all branches and tags from old-origin to new origin
git push --prune origin +refs/remotes/old-origin/*:refs/heads/* +refs/tags/*:refs/tags/*