Need to remove manually _site to change to master branch after bin/deploy

[AltamarMx]

The deployment of the page works, and everything seems to be working, but when using manual deploy ./bin/deploy
git does not change to master branch. I can change if i delete _site/ directory, even changed line 103 of deploy file from:
rm -R _site/
to
rm -rf _site/
but still stuck in gh-pages branch.