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    <ol> <li><p>Yes, as explained in "<a href="https://stackoverflow.com/a/1979194/6309">true nature of submodules</a>"</p></li> <li><p>a git submodule is a reference to a specific commit (SHA1), not a branch, so you are always in a detach mode a first (which is compatible with a read-only usage).<br> In other words, <code>git submodule update</code> checks out a specific commit, rather than the tip of a branch.<br> The <code>.gitmodule</code> file will contain the reference of your submodule repo. And the specific SHA1 will be recorded in the parent repo as a special commit (mode 160000). When you '<code>git submodule add</code>' a new submodule, it records the SHA1 at which that other repo is currently checked out (whatever its branch).<br> If you want to make changes, then you must checkout a branch within that submodule repo (an existing branch <em>or a new one</em>: in both cases, you will push any new change back to the remote repo of that submodule).<br> An alternative would be <a href="http://gitslave.sourceforge.net/" rel="nofollow noreferrer">git slave</a>.</p></li> <li><p>See 2. The other branch(es) listed in the <code>git branch</code> are the local one existing in your submodule repo, including one local branch for each <a href="https://stackoverflow.com/a/4697054/6309">tracking branch</a> if you did a <code>git pull</code> at one point. </p></li> <li><p>Because the parent still reference the initial SHA1 of the submodule.<br> But since you have made modifications in it, that SHA1 needs to be updated.<br> Keep in mind that the submodule is a git repo in itself... with absolutely no idea it is used as a submodule. Hence the necessity to record the new state of that repo in the parent repo (the only one keeping track of the state of its submodules).<br> Your first git push is entirely an <em>internal</em> operation of the submodule repo (which isn't seen at all by the parent repo).<br> For a parent repo, the submodule repo is a "black box", with only a remote address and a SHA1. Whatever is done within the submodule has no consequence on the parent, which will detect only the change of the SHA1 of the submodule tree. </p></li> <li><p>Using <a href="http://help.github.com/fork-a-repo/" rel="nofollow noreferrer">forks</a> might help<br> See "<a href="https://stackoverflow.com/a/914090/6309">Changing remote repository for a git submodule</a>" to update your submodule remote URL.</p></li> </ol>
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    1. COthanks much! Excellent post in the other thread. re: 2; How does one find the specific commit that the submodule is referencing? You said "must checkout a branch within that submodule repo" - must it be an *existing* branch? I can create my own and work from there yeah? re: 3; running `git branch` in a submodule returns `*no branch` and others. Where do these 'others' come from is what I was wondering. re: 4; running the second git push should have accomplished this.. are you saying it failed? re: 5; yes, that was the idea. fork, then change urls. Will `git submodule update` overwrite?
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    2. CO@JordanArsenault: I have edited my answer to address your comment: http://stackoverflow.com/posts/9411932/revisions
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