After my commit, I try to push to Github repo:

```
PS C:\Users\Kevin\Documents\Projects> git push origin master
To https://github.com/name/first-project.git
 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'https://github.com/name/first-project.
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Integrate the remote changes (e.g.
hint: 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.

```

Then, I try to pull (because that is what it tells me to do). I get this error:

```
From https://github.com/name/first-project
 * branch            master     -> FETCH_HEAD
fatal: refusing to merge unrelated histories

```

Can someone please help me? Thank you so much!