错误如下：
Update failed
Invocation failed Unexpected end of file from server
java.lang.RuntimeException: Invocation failed Unexpected end of file from server
at org.jetbrains.git4idea.GitAppUtil.sendXmlRequest(GitAppUtil.java:30)
at org.jetbrains.git4idea.http.GitAskPassApp.main(GitAskPassApp.java:58)
Caused by: java.net.SocketException: Unexpected end of file from server
at java.base/sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:866)
at java.base/sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:689)
at java.base/sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:863)
at java.base/sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:689)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1615)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1520)
at org.apache.xmlrpc.DefaultXmlRpcTransport.sendXmlRpc(DefaultXmlRpcTransport... (show balloon)
原因：没有勾选Use credential helper（使用凭证），把红框勾上就ok了
