$ git push -u origin master
"D:/GitExtensions/GitCredentialWinStore/git-credential-winstore.exe" get: "D:/GitExtensions/GitCredentialWinStore/git-credential-winstore.exe": No such file or directory
$ notepad C:\cygwin64\home\Administrator\.gitconfig
改为(去掉两个反斜杠)：
[credential]
helper = !"D:/GitExtensions/GitCredentialWinStore/git-credential-winstore.exe"