如何从一个 Git 存储库迁移到另一个 Git 存储库？

Question

I need to do a migration from one Git repo to another Git repo. The destination is not empty. Someone in the past already did this work apparently, but now all the branches are outdated.

This is the situation:

Source remote repository: repo_source

branches:

• branch_A
• branch_B
• branch_C
• branch_D

Destination remote repository: repo_dest branches:

• branch_A
• branch_B

The idea is to have the missing branches (branch_C, branch_D) and the already existing branches (branch_A, branch_B) need to be updated with the new data.

As example here there are just 4 branches, but in realty is way more. So, is there a way (a script) for make this migration simple?

Answer 1

Clone repository repo_source using the git clone command.

git clone repo_source

Once done,

git remote add repo_dest repo_dest_url
git push --force --all repo_dest 

This should replace all the destination branches too even if it exists.

Answer 2

You can add the repo_dest repository as another remote and then pull and merge the changes locally and push them.

Try the below from your local working directory;

git remote add new_origin ORIGIN_URL           # add new remote
git pull new_origin branch_A                   # pull, merge branch_A and fix conflicts (if any)
git pull new_origin branch_B                   # pull, merge branch_B and fix conflicts (if any)
git push new_origin branch_A                   # push each branch to the new remote
git push new_origin branch_B
git push new_origin branch_C
git push new_origin branch_D