How do you fix small imperfections in AI-generated images without regenerating a whole new one?

Sometimes, I generate images for my blogs using ChatGPT. There are times when it generates an almost perfect image but with minor imperfections.

If I write a prompt again requesting it to fix the imperfection, it generates a totally new image which is not as per my expectation.

Tweaking the original prompt does the same thing (a new image altogether). I have also tried uploading the almost perfect image and writing a prompt to fix the image, yet it does the same aforementioned thing.

Has it happened to you? If yes, how did you solve it? All suggestions are welcome.