I have spent a lot of time in reading and trying out git submodules. But I have really given up.
My problem:
I am cloning a git repository as a submodule. So, I do
git submodule add -b master url localpath
The repository starts downloading and a corresponding entry is made in the .gitmodules file. git submodule status shows the latest commit.
So far so good.
During the development, it was found out that the HEAD commit in the submodule has a bug. So, the commit should be changed from master to some commit id.
So, I changed the commit id ( 7 aplhanumeric ) in the .gitmodule file from branch = master
branch = <commitid> -> .gitmodule file
And did
git submodule update --remote
The error is
Fatal: Need a single revision
Unable to find current origin/ revision in submodule path
I also tried
git submodule foreach git pull
so that it will pull the commit id, but it simply returns with
Entering name_of_the_submodule
Already up to date.
Can anyone please help me?
P.S: I have already gone through many tutorials and question and answers. So if you want to downvote this for fun, then please first point to an answer and I will delete this post.
After you have cloned the submodule as described in your question:
git submodule add -b master url localpath
Then you should be able to changedir to the submodule:
cd localpath
Once in the submodule, you can use any git commands and they will only affect the submodule's repo. For example, you can checkout that holy branch or revision:
git checkout <branch|tag|hash>
or checkout the second-to-last revision in master branch:
git checkout HEAD~1
Then changedir back to the main git repo:
cd ..
And git status should yield something like:
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
new file: .gitmodules
new file: localpath
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git checkout -- <file>..." to discard changes in working directory)
modified: localpath (new commits)
Then just add the changes done to your submodule:
git add localpath
And commit
git commit -m "Add submodule url to localpath with older working commit"
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