Git push: "fatal 'origin' does not appear to be a git repository - fatal Could not read from remote repository."

I know similar questions have already been asked.

But, I believe my issue is due lớn a mistake I have previously made and therefore is different: let bầm explain.

Everything was working smoothly, as I could:

• git add . all the files from my local repository.
• git commit -m "message here" lớn add messages lớn my commits.
• git push origin master lớn upload my files lớn GitHub.
• git push heroku master lớn upload my files lớn Heroku.

However, at some point, I created a new branch locally called add-calendar-model in case next steps of the phầm mềm development would go south...

... which is exactly what happened.

However, despite many attempts, I did not manage lớn get the initial code — i.e. the code from before I created the new branch — from the master branch lớn my local repository.

So, I decided lớn manually delete all the files from my local repository and git clone my master branch from GitHub.

This way, I got all my files back, but now, I cannot push any more lớn the remote repository.

Any time I try lớn run rẩy git push origin add-calendar-model or git push origin master, I get the following error:

fatal: 'origin' does not appear lớn be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

I am not very comfortable with Git and GitHub, as you may have guessed by now, and I have lớn admit that I have no clue about how lớn fix this.

Any idea?