Exclude specific files from 'git pull'

I have a production git repo that I only pull changes from the main repo into; I never change this repo or do commits/pushes from here. I recently accidentally pushed some untracked (at least I thought they were) image files to the main repo from my local dev repo. Now when I try to pull the latest from the main repo, git reports an error regarding overwriting the exiting image file with the file from the main repo. I don’t even want this file from the repo (it’s located in a ,gitignored directory on the production repo)

How can I a) get rid of these unwanted image files in my main repo, or b) exclude these files from my git pull?

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