Step 1

Remove the dist directory from the project’s .gitignore file (it’s ignored by default by Yeoman).

Step 2

Make sure git knows about your subtree (the subfolder with your site).

git add dist && git commit -m "Initial dist subtree commit"

Step 3

Use subtree push to send it to the gh-pages branch on GitHub.

git subtree push --prefix dist origin gh-pages

Step 4

Use below command for update it again

git push origin `git subtree split --prefix dist master`:gh-pages --force

**Note If your folder isn’t called dist, then you’ll need to change that in each of the commands above.