在运行composer update/install之前使用此命令:

git config --global http.sslverify false

You might have a DNS issue and not a certificate issue, so before you disable SSL verification in your Git shell you should rule out a DNS problem. Cases such as these have been mentioned in Q&A forums such as https-issues-possibly-related-to-dns. If you are using WSL on Windows as your terminal, then you can try running sudo echo nameserver 8.8.8.8 > /etc/resolv.conf and then issue the git commands to see if that makes a difference. This does not seem to be a permanent DNS fix (lasting only the lifetime of your terminal session), but it could help you determine whether it is a DNS issue and not a certificate issue. You could also check this document on configuring your network to use a public DNS. Again, this is only to help you determine if your DNS settings might need adjusting in order to help resolve the certificate issues.

修复SSL证书的特定错误问题:无法在git中获取本地颁发者证书

我在Let's Encrypt证书时也遇到了同样的问题。

一个网站与https我们只需要:

SSLEngine On
SSLCertificateFile /etc/letsencrypt/live/example.com/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/example.com/privkey.pem
Include /etc/letsencrypt/options-ssl-apache.conf

但少不要脸的人说:

fatal: unable to access 'https://example.com/git/demo.git/': SSL certificate problem: unable to get local issuer certificate

要修复它，我们还需要添加:

SSLCertificateChainFile /etc/letsencrypt/live/example.com/chain.pem

这对我很有用。我打开cmd行并运行以下命令。又拉了一下。

Git配置——global http。sslVerify假

问题是git默认使用“Linux”加密后端。

从Git for Windows 2.14开始，您现在可以配置Git使用内置的Windows网络层channel作为加密后端。这意味着它将使用Windows证书存储机制，您不需要显式地配置curl CA存储机制:https://msdn.microsoft.com/en-us/library/windows/desktop/aa380123(v=vs.85).aspx

执行:

git config --global http.sslbackend schannel

这应该会有所帮助。

在Windows上安装git时，使用通道是现在的标准设置，如果可能的话，建议不要通过SSH或更多的方式签出存储库，因为https更容易配置，而且不太可能被防火墙阻止，这意味着失败的几率更小。

在运行composer update/install之前使用此命令:

git config --global http.sslverify false