Automate push to github in laravel project

I'm trying to add, commit & push to github using php code.

git add . && git commit -m "Nero" && git push origin master

1. The code added files changed successfully.
2. The code commit successfully.
3. It takes too long time and still didn't push the code.

I tried a lot of commands and it successfully run, the problem is in

git push

git push origin master

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