git commits reorder by rebase

gistfile1.sh

$ git init

$ touch {a,b,c,d}

$ git status -s | awk '{print "git add",$2,";git commit -qm",toupper($2)}' | sh

$ git log --one-line
    xxxxxxx D
    xxxxxxx C
    xxxxxxx B
    xxxxxxx A

$ git rebase -i HEAD^^^
    # exchange line 1 to line 3
    # e.g. in vi mode [ddjp :x]

$ git log --one-line
    xxxxxxx B
    xxxxxxx D
    xxxxxxx C
    xxxxxxx A