git - Checkout to another branch with different composer dependencies -

so lately i've been developing composer package , ran following problem.

branch 1.0 had composer dependency on somepackage: 1.0.0
branch 2.0 had composer dependency on somepackage: 2.0.0

is possible switch between these 2 branches without removing vendor directory and running composer update each time after git checkout {branch}? if so, how can this?

as stated in documentation, composer.lock supposed committed repository. i'm afraid you're trying solve problem, because of wrong usage of composer.