basic git use

I want to have a git repository accessed via ssh.  Just for me, no plans to give anyone else 
access.

Below is the transcript of what I did, how do I solve the problem at the end of git refusing 
to update a checked out branch?

rjc@linux:/tmp$ mkdir orig
rjc@linux:/tmp$ cd orig
rjc@linux:/tmp/orig$ git init
Initialized empty Git repository in /tmp/orig/.git/
rjc@linux:/tmp/orig$ ls -al > file
rjc@linux:/tmp/orig$ git add file
rjc@linux:/tmp/orig$ git commit file
[...]
 1 file changed, 5 insertions(+)
 create mode 100644 file
rjc@linux:/tmp/orig$ cd ..
rjc@linux:/tmp$ mkdir copy
rjc@linux:/tmp$ cd copy
rjc@linux:/tmp/copy$ git init
Initialized empty Git repository in /tmp/copy/.git/
rjc@linux:/tmp/copy$ git pull localhost:/tmp/orig
remote: Counting objects: 3, done.
[...]
>From localhost:/tmp/orig
 * branch            HEAD       -> FETCH_HEAD
rjc@linux:/tmp/copy$ git push localhost:/tmp/orig
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 localhost:/tmp/orig master
rjc@linux:/tmp/copy$ git push --set-upstream localhost:/tmp/orig master 
rjc@linux:/tmp/copy$ ls -al > file2 
rjc@linux:/tmp/copy$ git push 


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