so assuming you have merged feature-1 onto master and squashed, you check how many commits have been made since feature-1 on feature-2 (in my prior example 2 co

so assuming you have merged feature-1 onto master and squashed, you check how many commits have been made since feature-1 on feature-2 (in my prior example 2 commits of 7, 8) and do: git rebase --onto master HEAD~2