git - extract a directory into a separate repository

git-extract-dir-notes.sh

# using:
# - git filter-branch OR
# - git filter-repo

# extract folder into a new repo

git clone git@github.com:__ORG__/__PROJECT__.git __LOCAL_ALIAS_DIR__
cd __LOCAL_ALIAS_DIR__
git co -b main

git filter-branch --prune-empty --subdirectory-filter __DIR_TO_EXTRACT__ main

# create __PROJECT_NEW__ repo in github and then:
git remote set-url origin git@github.com:__ORG__/__PROJECT_NEW__.git
git branch -M main
git push -u origin main

# or if you want to keep the original dir intact:

https://github.com/newren/git-filter-repo
git filter-repo --path __DIR_TO_EXTRACT__