In Git, how do I pull from a repository and get all the submodule changesets that are commited in that repository's submodule child repo's?

I'm trying to use git submodules with a topology like:

parent_repo
`-- child_repo 

We're maintaining a trunk copy that we all push and pull from. ( I know a star topology is not necessary. I realize you can pull from each other without reflecting through a central repository.)

trunk_child_repo <--+
                    |
trunk_parent_repo   |
`-- child_repo -----+ # child_repo will pull from trunk_child_repo by default

Now we have multiple copies of trunk_parent_repo with fully-populated submodules.

trunk_parent_repo
`-- child_repo

ross_parent_repo
`-- child_repo

bob_parent_repo
`-- child_repo

joe_parent_repo
`-- child_repo

I'm in the ross_parent_repo and I want to pull from bob_parent_repo and get all the edits that bob has done to the files in bob_parent_repo as well as the edits he's committe开发者_开发知识库d to his submodule bob_parent_repo/child_repo.

Unfortunately, when I do a git pull --recurse-submodules bob_parent_repo, it pulls from bob_parent_repo into ross_parent_repo, but trunk_child_repo into ross_parent_repo/child_repo.

Is it possible to have a nice, easy command to pull all the changesets that Bob has done in bob_parent_repo as well as all the changesets that he has done in all of his submodules? Will I have to script it up and iterate through the submodules in the .gitmodules file?

No need to open up .gitmodules; you can use git submodule foreach.

git pull $BOBS_PARENT_REPO
git submodule foreach 'git pull $BOBS_PARENT_REPO/$path/.git'

(This won't work for any submodules-of-submodules, though.)