吉特:头是“当前分支”还是“当前分支的尖端”?

• A 分支 ,从人类的角度来看,它具有直观的含义:从“主干”(通常是 master )或地面(最初的承诺);

• 分支 ,如Git所示,它只跟踪最近的提交。对于Git,分支只是引用提交链顶端的命名指针。

一旦你知道这两个定义在实践中都是简明的,就没有实际的含糊不清了。

HEAD 就是你现在所指的地方。这可以是分支(它是指向提交堆栈的指针)或提交本身。在典型的用例中,它将指向一个分支。但是,它也可以指向提交(此代码段假设您是某个git repo的根用户):

(base) Matthews-MacBook-Pro:abc matt$ git checkout -b test
Switched to a new branch 'test'
(base) Matthews-MacBook-Pro:abc matt$ cat .git/HEAD
ref: refs/heads/test
(base) Matthews-MacBook-Pro:abc matt$ git checkout master
Switched to branch 'master'
Your branch is up to date with 'origin/master'.
(base) Matthews-MacBook-Pro:abc matt$ cat .git/HEAD
ref: refs/heads/master
(base) Matthews-MacBook-Pro:abc matt$ git log -2
commit 5d4fe79e315c302722cfdfef3dd049f720db5acc (HEAD -> master, origin/master, origin/HEAD, test)
Author: Matt Messersmith <nah@blah.com>
Date:   Tue Sep 25 20:05:38 2018 -0400

    Problem 155 sol.

commit 73cdc8f6a679664e3b92a826377b280aadf31de1
Author: Matt Messersmith <nah@blah.com>
Date:   Tue Sep 25 19:47:50 2018 -0400

    An easy warmup.
(base) Matthews-MacBook-Pro:abc matt$ git checkout 73cdc8f6a679664e3b92a826377b280aadf31de1
Note: checking out '73cdc8f6a679664e3b92a826377b280aadf31de1'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 73cdc8f An easy warmup.
(base) Matthews-MacBook-Pro:leetcode matt$ cat .git/HEAD
73cdc8f6a679664e3b92a826377b280aadf31de1

“树枝”和“树枝尖”之间的区别其实意义不大。这有点像问指针和指针尖之间的区别。分支只指向对象(提交的堆栈),然后 以类似的方式操作(可以指向分支或提交)。我想可以归结为语义学和语言学。

嗯!

总是 你站的地方,很可能是树枝的尖端。。。但可能不是。比如说,您签出了主~2,但没有指向主~2的分支。那么头在大师~2上,你正在工作 分离头状态