Swaps the last two commits, perhaps, who knows? Have fun!

.gitconfig

[alias]
  swap-last-two-commits = "!f() {\n\
    set -eu \n\
    if [ ! -z \"`git diff HEAD`\" ]; then \n\
      echo \"Found uncommited changes... exiting.\" 1>&2 \n\
      exit 1 \n\
    fi \n\
    HEAD_0=\"$(git rev-parse --verify HEAD)\" \n\
    HEAD_1=\"$(git rev-parse --verify HEAD~1)\" \n\
    echo \"swapping ${HEAD_0} and ${HEAD_1}\" \n\
    git reset --soft HEAD~2 \n\
    git commit -C \"${HEAD_1}\" 1> /dev/null \n\
    HEAD_0_1=\"$(git rev-parse --verify HEAD)\" \n\
    git reset --hard HEAD~1 1> /dev/null \n\
    git cherry-pick \"${HEAD_0}\" 1> /dev/null \n\
    git cherry-pick --strategy=recursive -X theirs \"${HEAD_0_1}\" 1> /dev/null \n\
    if [ ! -z \"`git diff \"${HEAD_0}\"`\" ]; then \n\
      echo \"HEAD differs from \"${HEAD_0}\" run 'git reset --hard \"${HEAD_0}\"' to undo. \" 1>&2 \n\
      exit 1 \n\
    fi \n\
  }; f"