building a scratch image from a private branch using a non-standard version string

scratch-build.sh

git checkout devspaces-3-rhel-8
git pull origin devspaces-3-rhel-8

git branch private-crw-build-text-version-suffix -u origin/private-crw-build-text-version-suffix
git checkout private-crw-build-text-version-suffix
vim Dockerfile 

#  diff --git a/Dockerfile b/Dockerfile
#  -      version="3.1" \
#  +      version="3.1.pr" \

git commit -s -m "append .pr to version" Dockerfile
git push origin private-crw-build-text-version-suffix

# trigger scratch build
brewTaskID=$(rhpkg container-build --target devspaces-3-rhel-8-containers-candidate --scratch --nowait | sed -r -e "s#.+: ##" | head -1)
if [[ $brewTaskID ]]; then 
  google-chrome "https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=${brewTaskID}"
  brew watch-logs ${brewTaskID} | tee /tmp/${brewTaskID}.txt
fi