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Software

Splitting Off a Folder Into Its Own Repo - Git

Background¶

We had a folder on a project which contains all the front-end code. We wanted this folder to be split off into its own GitHub repo so a new front-end developer, a contractor, wouldn't have access to the back end code. This is the procedure that was done.

Reference¶

• https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/duplicating-a-repository
• https://docs.github.com/en/github/getting-started-with-github/splitting-a-subfolder-out-into-a-new-repository
  • NOTE: This article did NOT give us the desired results!
    • Only the "master" branch existed in the new repo
    • After the above issue was resolved, back end code still existed on branches besides "master".
    • The procedure below has been adapted to address these issues.
      

Procedure¶

• Sync with GitHub
  • Pull all commits
  • Commit and push all local changes
• Make a full backup of the repo (optional)
  • GitHub
    • Create new repo > "MyRepo.Backup"
  • Git Bash
    • cd "/C/Users/JohnDoe/Documents/MyRepo.Backup"
    • git clone --bare https://github.com/soltechinc/MyRepo.git
    • cd "MyRepo.git"
    • git push --mirror https://github.com/soltechinc/MyRepo.Backup.git
• Split the repo
  • GitHub
    • New repo > MyRepo.FrontEnd
  • Git Bash
    • cd "/C/Users/JohnDoe/Documents/MyRepo.FrontEnd"
    • git clone --bare https://github.com/soltechinc/MyRepo.git
    • cd "MyRepo.git"
    • The next step took about 14 minutes
    • git filter-branch --prune-empty --subdirectory-filter front-end-folder-name -- --all
    • git remote -v
    • git remote set-url origin https://github.com/soltechinc/MyRepo.FrontEnd.git
    • git remote -v
    • git push --mirror https://github.com/soltechinc/MyRepo.FrontEnd.git