The error “refusing to merge unrelated histories” occurs when you are trying to merge two projects that are not related in any way, i.e., they have completely different commit histories.

If you are sure you want to merge these unrelated histories, you can do so with the --allow-unrelated-histories option of git merge or git pull.

Here is the step-by-step plan:

1. Fetch the remote branch using git fetch origin your_branch.
2. Merge the remote branch with your local branch using git merge origin/your_branch --allow-unrelated-histories.

Here is the code:

git fetch origin master

git merge origin/master --allow-unrelated-histories

Replace “master” with the name of your branch if it’s not “master”.

For the next steps, you might want to resolve any merge conflicts that may occur, or push your changes to the remote repository.