i分叉了一个我正在尝试做出贡献的现有项目，
我试图以最简单的方式做到这一点。来自覆盆子Pi。我更改了电子邮件地址和项目名称以简单
我不明白为什么这不起作用，新存储库位于 https://github.com/username/project
请帮助我了解缺少的内容，在线找到GitHub的说明不够
pi@raspberrypi:~ $ git config --global user.name "username"
pi@raspberrypi:~ $ git config --global user.email "username@email.com"
pi@raspberrypi:~ $ git clone https://github.com/username/project
Cloning into 'project'...
remote: Enumerating objects: 23, done.
remote: Counting objects: 100% (23/23), done.
remote: Compressing objects: 100% (18/18), done.
remote: Total 1450 (delta 9), reused 16 (delta 5), pack-reused 1427
Receiving objects: 100% (1450/1450), 2.28 MiB | 0 bytes/s, done.
Resolving deltas: 100% (1019/1019), done.
pi@raspberrypi:~ $ cd project
pi@raspberrypi:~/project $ git add --all
pi@raspberrypi:~/project $ git commit -am "mychange"
[master 1732397] mychange
20 files changed, 2613 insertions(+), 2248 deletions(-)
create mode 100644 newfile.cpp
pi@raspberrypi:~/project $ git push
Username for 'https://github.com': username@email.com
Password for 'https://username@email.com@github.com':
remote: Permission to username/project.git denied to myname.
fatal: unable to access 'https://github.com/username/project/': The request ed URL returned error: 403
github要求的用户名不应是电子邮件地址。（username@email.com）它应该是您的github用户帐户名称。
除非您激活2FA，在这种情况下，用户名仍然是您的github帐户，但是您的密码将是PAT（个人访问令牌）