Normally it happens because the project is private and you have not rights to write it. I had the same "problem" a few times, and it was for that reason. If the project it is yours, just create a private and a public key following this link: https://docs.github.com/en/github/authenticating-to-github/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent and add them to the "SSH and Key" section on gitHub, then you will be able to push to the repo. In the other hand if the project it is not your, ask the owner to give you the rights for it.

你必须生成SSH密钥，并在设置中添加到你的github帐户中 转到你的项目，在那里你克隆里面运行这些命令

1-ssh keygen -t rsa -b 4096 -C "rajankumar148@gmail.com"

在命令之后，你会得到一些选项，路径和名称可以留空，你可以输入密码。

2-eval $(ssh-agent -s)。

3-ssh-add ~ / . ssh / id_rsa

在这个命令之后，您必须输入与第一个命令中创建的相同的密码

之后，你可以检查你的默认主目录或任何目录，它在终端上显示。pub文件打开并复制密钥和过去在github设置新的SSH

我的代码片段:

environment {
    ...
    ...
    git_repo = 'my-repo'
}

stage ('Update Helm Chart') {
    steps {
        echo 'Updating values.xml file with latest Docker image tag'

        withCredentials([usernamePassword(credentialsId: '6bgg7dd45-c65f13-4275-a96ddehdv67gdr', usernameVariable: 'GIT_USER', passwordVariable: 'GIT_PASS')]) {
            sh '''
                git checkout ${git_branch}
                ...
                ...
                git remote set-url origin "http://${GIT_USER}:${GIT_PASS}@git.example.com/scm/${git_repo}.git"
                git push origin ${git_branch}
            '''
        }
    }
}

我的Git用户名是deploy.user@example.com，所以我必须首先URL编码@ %40。在URL编码之后，我的用户名变成了deploy.user%40example.com。

然而，我仍然得到以下错误:

fatal: repository 'http://****:****@git.example.com/scm/my-repo.git/' not found

经过一些试验和错误，我发现，如果我不使用变量的用户名，而是硬编码它，它的工作。

git remote set-url origin "http://deploy.user%40example.com:${GIT_PASS}@git.example.com/scm/${git_repo}.git"

我得到了同样的错误，因为我改变了我的github用户名，然后我这样做:

git remote -v

然后:

git remote set-url newname newurl 
git push -u origin master

这次我能够推送到存储库。 我希望这能有所帮助。

Normally it happens because the project is private and you have not rights to write it. I had the same "problem" a few times, and it was for that reason. If the project it is yours, just create a private and a public key following this link: https://docs.github.com/en/github/authenticating-to-github/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent and add them to the "SSH and Key" section on gitHub, then you will be able to push to the repo. In the other hand if the project it is not your, ask the owner to give you the rights for it.

在我的情况下，这是因为我在另一个GitHub帐户也添加了相同的SSH密钥。检查和修复步骤

检查它:ssh -T git@github.com。如果显示了正确的用户名，那么问题就不同了。如果是另一个帐户，则执行步骤2。 简单地去另一个帐户，并删除ssh密钥从那里。 不同的帐户使用不同的密钥。Github把它们搞混了。