解决 git push Permission denied

$ git push
git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

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

$ ssh-keygen -t rsa -C GitHub绑定的邮箱

$ ssh-keygen -t rsa -C GitHub绑定的邮箱
Generating public/private rsa key pair.
Enter file in which to save the key (/c/Users/用户名/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /c/Users/用户名/.ssh/id_rsa
Your public key has been saved in /c/Users/用户名/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:KI0NCK6lOpAvHOT9RPtpobmj3/08V4i+Bbg756Zh8+Q GitHub绑定的邮箱
The key's randomart image is:
+---[RSA 3072]----+
...
+----[SHA256]-----+

/c/Users/用户名/.ssh/id_rsa.pub