git, obliterate specific commits

I would like to obliterate a series of git commits between two points, we’ll call these the START and END commits.

First, determine the SHA1 for the two commits, we’ll be forcefully deleting everything in between and preserving the END exactly as it is.

Detach Head

Detach head and move to END commit,

git checkout SHA1-for-END

Move HEAD to START, but leave the index and working tree as END

git reset --soft SHA1-for-START

Redo the END commit re-using the commit message, but on top of START

git commit -C SHA1-for-END

Re-apply everything from the END

git rebase --onto HEAD SHA1-for-END master

push -f