git-filter-and-update.sh

#!/bin/bash

update_repo() {
	 echo ============================
	 echo ========= NEXT: $1 =========
	 echo ============================
	 echo

	 rm -Rf .git/refs/original
	 git checkout dev
	 # git fetch origin dev
	 git fetch reference $2
	 git fetch reference $3
	 git filter-branch -f --prune-empty --subdirectory-filter $1 reference/$2 reference/$3 -- --all
	 DEV_ORIGIN_REV_HEAD=$(git rev-parse --short origin/dev~1)
	 DEV_LOCAL_REV_HEAD=$(git rev-parse --short reference/$2)
	 if [ "$DEV_ORIGIN_REV_HEAD" != "$DEV_LOCAL_REV_HEAD" ]; then
	 	 git fetch origin/dev
	 	 git reset reference/$2 --hard
		 git cherry-pick $(git rev-parse --short origin/dev)
		 git push -f
	 else 
	 	 echo ==============================
	 	 echo PROJECT DEV ALREADY UPDATED
	 	 echo ==============================
	 fi
	 
	 PROD_LOCAL_REV_HEAD_COUNT=$(git rev-list reference/$3..origin/prod --count)
	 if [ "$PROD_LOCAL_REV_HEAD_COUNT" -gt "0" ]; then
	 	 git checkout prod
		 git branch --set-upstream-to=origin/prod prod
		 git reset reference/$3 --hard
		 git push -f
		 git checkout test
		 git branch --set-upstream-to=origin/test test
		 git reset reference/$3 --hard
		 git push -f
		 git checkout dev
	 else 
	 	 echo ==============================
	 	 echo PROJECT PROD ALREADY UPDATED
	 	 echo ==============================
	 	 echo ==============================
	 	 echo PROJECT TEST ALREADY UPDATED
	 	 echo ==============================
	 fi
	 echo
}

cd core
update_repo core dev prod
cd ../

cd ms-billing 
update_repo microservices/billing dev prod
cd ../

cd ms-integration
update_repo microservices/integration dev prod
cd ../

cd ms-notification
update_repo microservices/notification dev prod
cd ../

cd ms-prediction
update_repo microservices/prediction dev prod
cd ../

cd ms-report-generator
update_repo microservices/report_generator dev prod
cd ../

cd ms-stats-log
update_repo microservices/stats_log dev prod
cd ../

cd util-deployment
update_repo deployment dev prod
cd ../

cd util-giatec
update_repo giatecutilities dev prod
cd ../

Run using:
sudo bash -c "$(curl -L https://gist.githubusercontent.com/poldz123/4f2e41d9ba677eea2fee26d82d10c27d/raw/e48d48f6b5897a2dde5b1b89d61bfc268e8482b7/git-filter-and-update.sh)"