+ # unset these, should not be exposed to builder shell!
+ unset GIT_WORK_TREE GIT_DIR
+ # these are set by jenkins
+ unset GIT_PREVIOUS_COMMIT GIT_URL GIT_PREVIOUS_SUCCESSFUL_COMMIT GIT_BRANCH GIT_COMMIT
+ # fail if something still set
+ env | grep ^GIT_ && Exit_error err_build_fail
+