How would I go about adding a Git submodule for a specific tag or commit?
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git
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git-submodules
Submodule repositories stay in a detached HEAD state pointing to a specific commit. Changing that commit simply involves checking out a different tag or commit then adding the change to the parent repository.
$ cd submodule
$ git checkout v2.0
Previous HEAD position was 5c1277e... bumped version to 2.0.5
HEAD is now at f0a0036... version 2.0
git-status on the parent repository will now report a dirty tree:
# On branch dev [...]
#
# modified: submodule (new commits)
Add the submodule directory and commit to store the new pointer.
Step 1: Add the submodule
git submodule add git://some_repository.git some_repositoryStep 2: Fix the submodule to a particular commit
By default the new submodule will be tracking HEAD of the master branch, but it will NOT be updated as you update your primary repository. In order to change the submodule to track a particular commit or different branch, change directory to the submodule folder and switch branches just like you would in a normal repository.
git checkout -b some_branch origin/some_branchNow the submodule is fixed on the development branch instead of HEAD of master.
From Two Guys Arguing — Tie Git Submodules to a Particular Commit or Branch .
Source: Stackoverflow.com