push an 'unchecked out' branch

I want to push a branch (not the current) without having to check it out first, how can I achieve that ?

this is how I'd do:

#currently in master
git checkout feature
git push origin feature
git checkout master

but checking out feature can cause conflicts, can't I just push another branch than the current one ?

Simply:

git push origin feature:feature

Or shorter:

git push origin feature