How to checkout to a different branch in submodules?

Question

We are have 2 rails projects for which /models are common for both of the projects and so we maintained a separate repo by using submodules concept.

Now in project1 I created a branch rails3_upgrade from master for my submodules ie, in app/models.

how can I checkout to that branch in project2 models from master?

I tried get fetch --all and git remote -v and some other options but couldn't see the branch I created.

Googled but couldn't find. Can anyone tell me how can I do this?

Answer 1

A branch created in a parent repo project1 won't be visible by other repos (submodules or project2)

You can create that branch in a submodule of Project1, and see it in the same submodule in project2

cd /path/to/project1/submodule1
git checkout -b newBranch
git push -u origin newBranch

cd /path/to/project2/submodule1
git fetch
git checkout newBranch --track origin/newBranch

As usual, is you make any modification in a submodule, don't forget to add and commit in the parent repo as well.

Creating a branch in a submodule does not mean the submodule will always checkout the latest of that branch though.
For that, see " Git submodules: Specify a branch/tag " I wrote before.
And for the submodule to update itself to the latest of that branch, you would need a

git submodule update --recursive