我使用github的时间相对较短，我总是使用客户端来执行提交和拉取。昨天我决定从git bash中尝试一下，我成功地创建了一个新的repo和提交文件。
今天我从另一台计算机上对存储库进行了更改，我已经提交了更改，现在我回到了家，并执行了git拉来更新我的本地版本，我得到了这个:
There is no tracking information for the current branch.
Please specify which branch you want to merge with.
See git-pull(1) for details
git pull <remote> <branch>
If you wish to set tracking information for this branch you can do so with:
git branch --set-upstream develop origin/<branch>
这个回购的唯一贡献者是我，没有分支(只有一个主)。我在窗口上，我已经执行了从git bash的拉:
git 状态：
$ git status
# On branch master
nothing to commit, working directory clean
git 分支：
$ git branch
* master
我做错了什么?
对于任何想要了解为什么会发生这种情况的人来说，有几个相关的概念:
A git repository can have zero or more "remotes", which are named links to other repositories, usually on some central server somewhere. You can list them with "git remote -v"
If you clone a repository from another server, a default remote called "origin" will be set up for you.
The full syntax for both git push and git pull is to specify a remote name and a branch on that remote.
A local branch can be associated with a branch on a remote, so that you don't have to type it each time you pull or push.
If you check out a branch from a remote repository using "git switch branchname" or "git switch -u origin/branchname", the association will be set for you. ("git switch" is the same in this case as "git checkout")
If you create a branch locally and then push it with "git push -u origin", it will set the association.
But if you don't include the "-u" in the initial pull or push, the association won't be stored, so you have to be specific every time.
正如其他答案指出的那样，解决方案是使用“git branch——set-upstream-to=origin/branchname”来设置关联，其中“origin”是远程服务器的名称，而“branchname”是远程服务器上调用分支的名称。它可能在本地有相同的名字，但不一定是。
有了Git 2.24(2019年Q4)，你就不必这么做了
git branch --set-upstream-to=origin/main main
git pull
你将能够做到:
git pull --set-upstream-to=origin/main main
参见“默认远程和分支使用-u选项-适用于推而不是拉”。
注意，在Git 2.37 (Q3 2022)中，你有一个新的选项push.autoSetupRemote
git config --global push.autoSetupRemote true
然后，一个简单的git push将与git push——set-upstream-to=origin/main main相同，使下一个git pull已经设置为从origin/main检索提交。
