Git merge single file from another repository into my own

Question

Say I have my own git repo with a bunch of text files in it. There is another different git repo that someone else owns with a bunch of text files that all differ from my ow

Answer 1

Try to add the other-repo then bring its branches including your target-branch

git remote add other git@github.com:username/other-repo.git
git fetch other

Switch to the branch you want to merge in the target-file.ext:

git checkout your-branch

Merge the target file into yours:

git checkout -p other/target-branch target-file.ext