error failed to push some refs to 'heroku' code example

Example 1: error: failed to push some refs to

git push -f origin master

Example 2: error: failed to push some refs to

git pull --rebase origin main
git push origin main

Example 3: failed to push some refs to

git config --global pull.rebase true
git config --global rebase.autoStash true

Example 4: failed to push some refs to repository

git pull --rebase
git push

Example 5: failed to push some refs

git push origin master

Example 6: error: failed to push some refs to

error: failed to push some refs to