Plugin/Hook for creating a patch for the commit while raising a pull request

[avsaditya]

Hello,

We have some third party repos which get updated frequently with new releases from external sources. But we also make some customization/changes on these repos.

I want to store the patch file for the changes that we make automatically so that I can just apply them on the updated code (with minimal effort).

I want to know if there is a plugin/hook for creating a patch for the commit while raising a pull request or something similar.

Any help is highly appreciated.

Thanks and Regards

Aditya