将 Git 存储库的一部分移动到另一个存储库以保留历史记录

Question

In this post I saw a method on how to clone an entire Git repository in a history preserving way. I am now trying to split two repositories into two pieces, so that one folder in my current repository should become its own independent repository. I would like to make it so that this folder was essentially cloned in a history preserving way, but such that only history concerning the files in that particular folder survives. Is that possible?

Answer 1

Clone the repo, then use the BFG repo cleaner to delete all the files in the other directory and all commits that are left empty because of that purge.

Then clone the original repo again and rinse and repeat for the other directory.

You can find the BFG repo cleaner here:

• https://rtyley.github.io/bfg-repo-cleaner/

.

 git clone --mirror git://example.com/some-big-repo.git
 java -jar bfg.jar --delete-folders RemoveMe --delete-files RemoveMe
 cd some-big-repo.git $ git reflog expire --expire=now --all && git gc --prune=now --aggressive