Remove props...

cloneElement.js

// I haven't tested this one, but something like this should work?
class Component1 extends React.Component {
  render() {
    // Create a new `props` object without `foo` and `bar` properties
    const {
      ...props,
      foo,
      bar
    } = someComponent.props;
    
    return React.cloneElement(someComponent, props);
  }
}

hoc.js

class Component1 extends React.Component {
  render() {
    // Create a new `props` object without `foo` and `bar` properties
    const {
      ...props,
      foo,
      bar
    } = this.props;
    
    // Drop just the clean props object into the component:
    return <Component2 {...props} />
  }
}

The first snippet won't work: React.cloneElement(someComponent, props) merges props, so foo and bar will still be there.