say you have a branch named #42-my-lovely-branch and would like to push it but forgot to set the upstream branch. You get the following error message:

fatal: The current branch #42-my-lovely-branch has no upstream branch.
To push the current branch and set the remote as upstream, use

    git push --set-upstream origin #42-my-lovely-branch

This cannot be copy & paste as #42-my-lovely-branch should be escaped with a backslash as follows:

    git push --set-upstream origin \#42-my-lovely-branch