当git clone之后，直接git pull它会自动匹配一个正确的remote url
是因为在config文件中配置了以下内容：
1
[branch
"
master
"
]
2
remote
=
origin
3
merge
=
refs
/
heads
/
master
表明：
1.git 处于master这个branch下时，默认的remote就是origin；
2.当在master这个brach下使用指定remote和merge的git pull时，使用默认的remote和merge。
但是对于自己建的项目，并用push到远程服务器上，并没有这块内容，需要自己配置。
如果直接运行git pull，会得到如此结果：
1
$ git pull
2
Password:
3
You asked me to pull without telling me which branch you
4
want to merge with, and
'
branch.master.merge
'
in
5
your configuration file does not tell me, either. Please
6
specify which branch you want to use on the command line and
7
try
again (e.g.
'
git pull
'
).
8
See git
-
pull(
1
)
for
details.
9
10
If you often merge with the same branch, you may want to
11
use something like the following
in
your configuration file:
12
13
[branch
"
master
"
]
14
remote
=
<
nickname
>
15
merge
=
<
remote
-
ref
>
16
17
[remote
"
在参考[2]中，有这样一段：
Note: at this point your repository is not setup to merge _from_ the remote branch when you type 'git pull'. You can either freshly 'clone' the repository (see "Developer checkout" below), or configure your current repository this way:
1
git remote add
-
f origin [email protected]:
/
srv
/
git
/
project.git
2
git config branch.master.remote origin
3
git config branch.master.merge refs
/
heads
/
master
因此通过git config进行如下配置：
1 $ git config branch.master.remote origin 2 $ git config branch.master.merge refs/heads/master
或者加上--global选项，对于全部项目都使用该配置。
执行完以上 命令，在config文件中配置了以下内容：
1
[branch
"
master
"
]
2
remote
=
origin
3
merge
=
refs
/
heads
/
master
============================
假如 当前 仓库有 两个 分支，master 和 test1，当我们 执行了 以下 两条命令之后：
git config branch.test1.remote origin
git config branch.test1.merge refs/heads/test1
将在 在config文件中配置了以下内容：
1
[branch
"test1
"
]
2
remote
=
origin
3
merge
=
refs
/
heads
/test1