How to solve error GitHub Permission denied fatal Could not read from remote repository

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There are multiple Git libraries are used on my machine, such as GitHub/Company Private Git repo, etc., the Git tool mainly uses Terminal and GitKraken, and occasionally strange issues will arise. For example, the following error occurred when deploying the Hexo Blog a few days ago:

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Permission denied (publickey).
fatal: Could not read from remote repository.

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

The usual solution is to regenerate the SSH Key of GitHub.

But there’s no issue with my local configuration, I can push code normally in Terminal and GitKraken.

Guessing that there might be some hitch in the process, I used:

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ssh -T git@github.com

And saw:

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Hi {username}! You've successfully authenticated, but GitHub does not provide shell access.

Then redeployed and pushed, It’s worked!

Reference:

https://docs.github.com/en/authentication/troubleshooting-ssh/error-permission-denied-publickey