Git 获取远程远程和远程分支

我想获取远程存储库的远程分支

比如说，在这种情况下-

$ cd alpha
$ git remote
beta
$ git branch -a
master
remotes/alpha/master
$ cd ../beta
$ git remote
gamma
$ git branch -a
master
remotes/gamma/slave

-我想通过

beta

将

gamma

的

slave

分支提取到

alpha

存储库中。这可能会将

gamma

添加为

alpha

的远程，并将

gamma/slave

用于新分支的refspec。我不一定要创建本地跟踪分支。我也不一定有文件系统访问

beta

或

gamma

，这与示例中不同

---

这类事情可以通过

$git clone--mirror

来完成，但是在已经存在的回购协议中有没有办法做到这一点呢？

看起来设置一个非默认的refspec会让我半途而废

例如，考虑这个设置：

• 初始化

  gamma

  $ (mkdir gamma; cd gamma; git init; touch README; git add README;
     git commit -m 'Initialized slave.'; git branch -m slave; echo)
  Initialized empty Git repository in /tmp/test-git/gamma/.git/
  [master (root-commit) 0cebd50] Initialized slave.
   0 files changed, 0 insertions(+), 0 deletions(-)
   create mode 100644 README
  

• 初始化

  beta

  并将

  gamma

  添加为远程：

  $ (mkdir beta; cd beta; git init; touch README; git add README;
     git commit -m 'Initialized master.';
     git remote add gamma ../gamma; git fetch gamma
     echo; echo "In repo $(basename $PWD):"; git branch -a; echo)
  Initialized empty Git repository in /tmp/test-git/beta/.git/
  [master (root-commit) f6512e1] Initialized master.
   0 files changed, 0 insertions(+), 0 deletions(-)
   create mode 100644 README
  warning: no common commits
  remote: Counting objects: 3, done.
  remote: Total 3 (delta 0), reused 0 (delta 0)
  Unpacking objects: 100% (3/3), done.
  From ../gamma
   * [new branch]      slave      -> gamma/slave
  
  In repo beta:
  * master
    remotes/gamma/slave
  

• 克隆

  beta

  生成

  alpha

  ：

  $ git clone beta alpha
  Initialized empty Git repository in /tmp/test-git/alpha/.git/
  $ cd alpha; git branch -a
  * master
    remotes/origin/HEAD -> origin/master
    remotes/origin/master
  

现在变得凶猛起来：

# Avoid errors from pulling into active branch.
$ git checkout origin/master  | head -3  # intentionally acquire severed HEAD
Note: checking out 'origin/master'.

You are in 'detached HEAD' state. You can look around, make experimental
$ git fetch origin '+refs/*:refs/*'      # pour steroids into open esophagus
From /tmp/test-git/beta
 * [new branch]      gamma/slave -> gamma/slave
$ git branch -a
* (no branch)
  master
  remotes/gamma/slave
  remotes/origin/HEAD -> origin/master
  remotes/origin/master
$ git remote
origin

因此，执行“$git fetch”+refs/：refs/”将引入分支本身，但不会更新构成其所属远程服务器的配置项

有趣的是，为远程分支设置跟踪分支将导致它开始跟踪自己的回购：

$ git branch --track slave gamma/slave 
Branch slave set up to track local ref refs/remotes/gamma/slave.
$ git config -l | grep '^remote\|^branch'
remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
remote.origin.url=/tmp/test-git/beta
branch.master.remote=origin
branch.master.merge=refs/heads/master
branch.slave.remote=.
branch.slave.merge=refs/remotes/gamma/slave

我想这真的不管用

$ git checkout slave
Switched to branch 'slave'
$ git fetch
From .
 * remote branch     gamma/slave -> FETCH_HEAD
$ git fetch
From .
 * remote branch     gamma/slave -> FETCH_HEAD

---

我也有点同样的情况；从上游获取一个回购协议，然后我在本地克隆了相同的回购协议。上游回购是巨大的，我在移动互联网上，所以我不想从上游获取所有分支。有几个问题是“如何获取所有远程分支？”有很多的升级投票，简单的答案通常是普通的克隆/获取可以做到这一点，但这似乎只是在使用“中央存储库”时才会出现。