这个网页吾试了无数次，都无法打开。不能看也不影响问题的解决。具体操作参考：
https://quantum6.blog.csdn.net/article/details/120924914
如果能看到更好。于是去网上搜集了一点内容。
https://github.blog/changelog/2021-08-12-git-password-authentication-is-shutting-down/
As previously announced, starting on August 13, 2021, at 09:00 PST, we will no longer accept account passwords when authenticating Git operations on GitHub.com. Instead, token-based authentication (for example, personal access, OAuth, SSH Key, or GitHub App installation token) will be required for all authenticated Git operations. Please refer to this blog post for instructions on what you need to do to continue using git operations securely. Removal
https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/
In July 2020, we announced our intent to require the use of token-based authentication (for example, a personal access, OAuth, or GitHub App installation token) for all authenticated Git operations. Beginning August 13, 2021, we will no longer accept account passwords when authenticating Git operations on GitHub.com.
