title: Rstudio git issue "error: unable to read askpass response from 'rpostback-askpass'"
body: <p>In Windows 10
  after clone repository, it shows:
  cloing into 'xxxx'...
  /user/bin/env: 'bash': No such file or directory
  error: unable to read askpass response from 'rpostback-askpass'"</p>
  
  <p>I have git installed and set up correctly (can run git directly from cmd line)
  and access to the repository (have tested from cmd line also)
  Is it a bug with Rstudio?</p>
  
  <p>I am struggling to edit .gitconfig file from windows command line.</p>