git-detached-head

This question already has an answer here: Why is my GIT Submodule HEAD detached from master? 6 answers I've added 2 submodules to a project, subA and subB, in externals/subA and externals/subB. Today another team member committed his code and when it is pulled, both subA and subB show detached head status when using git status within externals/subA and externals/subB. I did git submodule update first and that reported no errors. I tried then git submodule init and git submodule update again but it did not change. How can we get the submodules back to be in sync? What causes this for the

I checked out a commit/branch from master, and then checked out back to master and wrote something. After that, I committed it, but I ended up with a detached HEAD. Why? Here is what I did: Create a new project and create git repository. git add git commit type some words git commit checkout to previous commit checkout back type some word try to commit; it prompts there is a detached head. IntelliJ IDEA's console shows: 17:08:58.143: cd C:\Users\jiahao\IdeaProjects\testtt\src 17:08:58.143: git init Initialized empty Git repository in C:/Users/jiahao/IdeaProjects/testtt/src/.git/ 17:09:16.331:

This question already has an answer here: git: switch branch without detaching head 4 answers I tried something like this: git branch temp to create a new branch but don't move the HEAD . But I get: # Not currently on any branch. I don't want to merge anything, I just want a new branch at the current HEAD . You're sitting on a detached HEAD : git checkout <sha> You want to make a branch at that commit: git branch my-new-branch And now switch to that branch: git checkout my-new-branch 来源： https://stackoverflow.com/questions/22366034/git-create-branch-where-detached-head-is

I know that, in Git parlance, "detached HEAD" corresponds to a state in which the symbolic reference HEAD is not pointing to any branch. I also know that git branch , for instance, will tell me whether I'm in detached-HEAD state, e.g. * (detached from 9a2ef02) master or not, e.g. * master However, I'd like to know if there is a way to make the output of git log --decorate completely unambiguous as to whether I'm in detached-HEAD state or not. Here is an example explaining what I mean by "unambiguous". Example Say I'm on master and my history looks as follows: 4d860e9 (HEAD, master) Remove