Page Comparison

...

$ mkdir myapp
$ cd myapp
$ git init
Initialized empty Git repository in ...
$ git status
On branch main

No commits yet

nothing to commit (create/copy files and use "git add" to track)

Add repo to GitHub

Create the repo in GitHub without adding any files (README, License, .gitignore).  If you allow Github to add files, they will be added to the master branch.

echo "# myapp" >> README.md
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/your_organization/myapp.git
git push -u origin main

NOTE: All of this is listed on the new repo page in github when you create the repo.  EXCEPT the last line which specifies main as the branch instead of the default master branch provided by github.