问题
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.
回答1:
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