use rev-list to get first commit pointed to by that tag, instead of the tag itself
use rev-list to get first commit pointed to by that tag, instead of the tag itself

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