return the exit code from git in case of error
return the exit code from git in case of error

Shopify/shipit-engine,ershad/shipit-engine,perobertson/shipit-engine,perobertson/shipit-engine,ershad/shipit-engine,Shopify/shipit-engine,Shopify/shipit-engine,perobertson/shipit-engine,perobertson/shipit-engine,ershad/shipit-engine,Shopify/shipit-engine,ershad/shipit-engine,Shopify/shipit-engine,perobertson/shipit-engine,ershad/shipit-engine