为 git 历史记录中的所有提交更改 git 子模块的远程存储库

Question

How can I change the remote url of a git submodule without breaking commit history? Currently if I checkout old commits my submodule seems to have the old remote url witch doesn't exist anymore.

My workflow:

1. Clone repo with commit A,B
2. git submodule update --init
3. Change submudule url

4. Push.gitmodules to remote (Commit C)

5. Clone repo with commit A,B,C

6. Switch to commit A
7. git submodule update --init -> FAILES

-> want also the new submodule remote URL, but still the old url in.gitmodules

It seems that git submodule update --init is still trying to use the old remote url

If have also tried to use git submodule update , as suggested, but I also got the error:

The Git repository with name or identifier OLD_REPO_NAME does not exist or you do not have permissions for the operation you are attempting.

Answer 1

Let's try another approach. Instead of replacing URLs in the config files replace URLs on the fly:

git config --global url.<NEW-URL>.insteadOf <OLD-URL>

See git help config about url.<base>.insteadOf .

Answer 2

Commits are not tied to remotes. Once you changed a remote the change is in effect for all commits, old and new.

To change the URL for a submodule you need:

• change the URL in file .gitmodules in the root of the superproject;
• run git submodule sync to copy the change to .git/config
• cd into the submodule and run git remote set-url to change the URL in the submodule.

When you checkout an old commit in the superproject you get old .gitmodules but that doesn't matter — git doesn't use URLs from .gitmodules — it uses URLs from .git/config . git sync copies the URLs from .gitmodules to .git/config . So after checking out an old commit with an old .gitmodules DO NOT run git sync and git will continue using new URLs from .git/config .