如何将新项目连接到Github存储库?

我刚刚创建了一个新项目并在那里添加了一些文件。 然后我创建了一个新的Github存储库(public)。

现在我要将本地Git项目推送到远程GitHub。

所以我这样做:

git init
git add .
git commit -m "First commit"

然后:

git remote add https://github.com/user/project.git
git remote -v
# origin    https://github.com/user/project (fetch)
# origin    https://github.com/user/project (push)

然后我试图推动我的新项目项目:

git push
# fatal: The current branch master has no upstream branch.
# To push the current branch and set the remote as upstream, use
# git push --set-upstream origin master

所以我是这样做的:

git push --set-upstream origin master
And get back:
# To https://github.com/user/project
# ! [rejected]        master -> master (non-fast-forward)
# error: failed to push some refs to 'https://github.com/user/project'
# hint: Updates were rejected because the tip of your current branch is # behind
# hint: its remote counterpart. Integrate the remote changes (e.g.
# hint: 'git pull ...') before pushing again.
# hint: See the 'Note about fast-forwards' in 'git push --help' for details.

所以我一直遵循他们的指示:

git pull
And I get:
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-to=origin/<branch> master

继续做他们写的:

git pull origin master
And get back:
From https://github.com/user/project
 * branch            master     -> FETCH_HEAD
fatal: refusing to merge unrelated histories

我只是通过使用

git clone https://github.com/user/project

但我不认为这是正确的工作方式,是吗?

希望能得到一些提示。 谢谢。