To https://github.com/alihaiderdev/blood-bank-reactnative-app.git ! [rejected] main -> main (fetch first) error: failed to push some refs to 'https://github.com/alihaiderdev/blood-bank-reactnative-app.git' code example

Example 1: ! [rejected] master -> master (fetch first) error: failed to push some refs to '

git init
git add README.md
git add .
git commit -m "first commit"
git remote add origin https://github.com/userName/repoName.git
git push --force origin master

Example 2: ! [rejected] master -> master (fetch first) error: failed to push some refs to '

git fetch origin master:tmp
git rebase tmp
git push origin HEAD:master
git branch -D tmp

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