I have a startup script that is supposed to sync the git repo on the machine with master

```
git pull -r origin master

```

Getting 

```
error: The following untracked working tree files would be overwritten by merge:
    file1.py
    Folder2/file3.rb
    Please move or remove them before you can merge.
    Aborting.

```

tried solving this using 

```
git clean -df
git clean -dn

git stash
git checkout master
git pull -r origin master
# to pull new branches
git fetch

```

still getting the error. 
How can I ensure successful pull from master?

[This is done automatically.]

Thanks