title: Cannot get git commits for multiple repos using Multiple-SCM-Plugin in Jenkins
body: <p>So, I have configured a jenkins job which checks out master branch from 3 repos. 
  Now I want to get the latest changes for all the three repos. </p>
  
  <p>Currently, the GIT_COMMIT env variable only gives the commit has for the last repo added in the configuration and not for all three of them. </p>
  
  <p>Is there any way to get the previous commit and the current git commit for all the three repositories ? </p>