When it comes to patches the first thing which comes to my mind is about pathe on cloth where it's torn. The reason why it's needed is to protect our body for any damage which can occur.
The same thing applies to relationship as well where if we hurt someone badly it create wrong impression in their mind about us and then it's bad mark which is our responsibility to get sorted out and work out to have a healthy relationship and not leave any lasting impression intentionally or unintentionally because to patch up for good will not leave any grudges in anyone's mind and help us to prosper.
Patches are like remedies to heal the pain which we have caused, it may be intentionally or unintentionally. Still, it's our duty to resolve in order to avoid any sought of misunderstanding.