I am attempting these days to have my master branch into my main branch (so I can start using as the default one), however, I am not being able to make it in GitHub.
After trying to open a pull request git does not detect differences between them and does not let me do the merging, although checking each branch, you can see all files from my project in the master and nothing in the main.
What can I do to fix it and why does this happen?