Submodule - update .gitmodules for specifying a branch name

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I have added a submodule to an ADO repository:

.gitmodules

[submodule "public"]
    path = public
    url = https://xyz.visualstudio.com/DefaultCollection/abc/_git/STW-Sol-public

Is there a git command to update .gitmodules for specifying a branch name?

azure-devops git-submodules git
1 Answers

Since git 2.22, you can use git submodule set-branch for that:

git submodule set-branch --branch mybranch public

This adds a branch = mybranch to your .gitmodules. Which you may also add manually, if you'd rather do so.

More information can be found on git-submodule(1).

You may also want to take a look at this answer, which elaborates more on what exactly it means to track a branch. Most importantly:

git submodule add -b is not some magically way to keep everything up to date with a branch. It is simply adds information about a branch in the .gitmodules file and gives you the option to update the submodule object to the latest commit of a specified branch before populating it.

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