switch to that branch, check the git log and git revert those commits individually. Once you have done that, switch back to the desired branch and there you can then use git cherry-pick to pick specific commits from the git refs and merge it into the right branch.

git checkout wrong_branch
git revert commitsha1
git revert commitsha2
git checkout right_branch
git cherry-pick commitsha1
git cherry-pick commitsha2

If the commits are grouped together and there are no commits pushed after your dirty commits, you can even use git reset to get that wrong branch to a state just before your commits and then follow that again using git cherry-pick to get your commits into the right branch.

git checkout wrong_branch
git reset commitsha3 #commit just before commitsha2
git checkout right_branch
git cherry-pick commitsha1
git cherry-pick commitsha2