Build a particular product version:
PRODUCT_VERSION=23.11 VERSION=1.0.0 make rpm
Build latest (by default PRODUCT_VERSION=latest):
VERSION=1.0.0 make rpm
Build with different URL:
VERSION=1.0.0 REPO_URL="packages.redborder.com make rpm
Build with different USER URL:
VERSION=1.0.0 USERNAME=dvanhoucke USER_REPO_URL="packages-sc.redborder.lan make rpm