got out of my git local branch somehow

Question

I'm using git and sourceTree software.

I have committed some changes

all i want to do is to have all change in local cancun_elad and push to remote cancun_elad.

but when I try to push it I get an error:

sourceTree:

Answer 1

First create a new branch

git checkout -b mybranch

Then switch to one of the existing branches

git checkout cancun_elad

Then merge in the changes from your old branch

git merge mybranch

Then push your changes to the remote

git push origin cancun_elad