How to reset changes to selected commit and save prev changes on unstaged changes?

@soramimi,
Example from GitExtensions:

![изображение](https://github.com/user-attachments/assets/ae333a52-7b88-42b1-98e7-63d4e76e00b9)

![изображение](https://github.com/user-attachments/assets/bc4902ad-e5a1-4068-a2b1-14991d2239f6)

![изображение](https://github.com/user-attachments/assets/3f84c3e4-22f0-4d9a-802c-be2881cf7e93)
