So I have 3 branches;
develop - my continued development branchversion_1 - a release branchversion_2
You need to cherry-pick those commits.
Switch to the branch where you want to add the commits:
git checkout develop
Then, cherry-pick the commit. First do a git reflog and get the SHA-1 of the commit of the hotfix.
Then, while you are on the branch develop, cherry-pick it
git cherry-pick
Perform similar actions on the other branch version_1.