我有一个远程gitosis服务器和一个本地git存储库，每次我在代码中做大的更改时，我也会将更改推到该服务器。
但是今天我发现，即使我有一些本地更改并提交到本地存储库，当运行git push origin master时，它说“一切都是最新的”，但当我使用git clone在远程服务器上签出文件时，它不包含最新的更改。我只有一个名为“master”的分支机构和一个名为“origin”的远程服务器。
PS:
这是git在运行ls-remote时显示的内容，我不确定它是否有帮助
$ git ls-remote origin
df80d0c64b8e2c160d3d9b106b30aee9540b6ece HEAD
df80d0c64b8e2c160d3d9b106b30aee9540b6ece refs/heads/master
$ git ls-remote .
49c2cb46b9e798247898afdb079e76e40c9f77ea HEAD
df80d0c64b8e2c160d3d9b106b30aee9540b6ece refs/heads/master
df80d0c64b8e2c160d3d9b106b30aee9540b6ece refs/remotes/origin/master
3a04c3ea9b81252b0626b760f0a7766b81652c0c refs/tags/stage3
你是在用一个分离的脑袋工作吗?
如:
指示您的最新提交不是分支头。
警告:以下是一个git重置——很难:如果你想保存当前修改的文件，请确保首先使用git stash。
$ git log -1
# note the SHA-1 of latest commit
$ git checkout master
# reset your branch head to your previously detached commit
$ git reset --hard <commit-id>
正如git签出手册页中提到的(重点是我的):
有时能够签出不在分支顶端的提交是有用的。
最明显的例子是在标记的官方发布点检出提交，就像这样:
$ git checkout v2.6.18
Earlier versions of git did not allow this and asked you to create a temporary branch using the -b option, but starting from version 1.5.0, the above command detaches your HEAD from the current branch and directly points at the commit named by the tag (v2.6.18 in the example above).
You can use all git commands while in this state.
You can use git reset --hard $othercommit to further move around, for example.
You can make changes and create a new commit on top of a detached HEAD.
You can even create a merge by using git merge $othercommit.
The state you are in while your HEAD is detached is not recorded by any branch (which is natural --- you are not on any branch).
What this means is that you can discard your temporary commits and merges by switching back to an existing branch (e.g. git checkout master), and a later git prune or git gc would garbage-collect them.
If you did this by mistake, you can ask the reflog for HEAD where you were, e.g.
$ git log -g -2 HEAD
虽然git push表示“所有内容都是最新的”，但从技术上讲，你仍然可以推送一个分离的HEAD，正如Jonathan Benn在评论中所指出的那样
git push origin HEAD:main
您必须指定目标分支，因为源不是分支，也没有上游目标分支。
见上面VonC的回答-我需要一个额外的步骤:
$ git log -1
- note the SHA-1 of latest commit
$ git checkout master
- reset your branch head to your previously detached commit
$ git reset --hard <commit-id>
我这么做了，但是当我尝试着去推remoterepo master时，它说
"错误:未能推动一些参考。为了防止您丢失历史记录，非快进更新被拒绝，合并远程更改(例如。'git pull')，然后再推。”
所以我做了'git拉remoterepo master'，它发现了一个冲突。我再次做了git reset——hard <commit-id>，将冲突文件复制到备份文件夹，git再次拉出remoterepo master，将冲突文件复制回我的项目，git提交，然后git推送remoterepo master，这一次它成功了。
Git不再说“一切都是最新的”，也不再抱怨“快进”。
$ git push origin local_branch:remote_branch
解释
我也犯了同样的错误，花了几个小时试图解决这个问题。最后我找到了。
我不知道的是git push origin branch-x会尝试在本地搜索branch-x然后推送到远程branch-x。
在我的例子中，我有两个远程url。我做了一个从分支-x到分支-y的签出，当我试图从本地的y推到远程的x时，我有一条消息，一切都是最新的，这很正常，因为我正在推到第二个远程的x。
长话短说，为了不落入这种陷阱，你需要指定源ref和目标ref:
$ git push origin local_branch:remote_branch
更新:
如果你每次推送分支都要运行这个命令，你可能需要设置本地和远程分支之间的上游，如下所示:
$ git push --set-upstream origin local_branch:remote_branch
Or
$ git push -u origin local_branch:remote_branch
我的错误不同于上面提到的所有错误。如果你不知道为什么你会有一个分离的头，那么你可能不会。我正在使用git commit和git push进行自动驾驶，还没有读取git commit的输出。结果，这是一条错误消息，因为我忘记了-am。
[colin] ~/github/rentap.js [master] M % git commit 'figured out some more stuff with the forms in views and started figuring out row and mode in models so also made matching routes and controllers'
error: pathspec 'figured out some more stuff with the forms in views and started figuring out row and mode in models so also made matching routes and controllers' did not match any file(s) known to git.
[colin] ~/github/rentap.js [master] M % git push
Enter passphrase for key '/home/colin/.ssh/id_ecdsa':
Everything up-to-date
通过把-am放在我经常做的地方来修复它:
[colin] ~/github/rentap.js [master] M % git commit -am 'figured out some more stuff with the forms in views and started figuring out row and mode in models so also made matching routes and controllers'
