Did you mean reflog?

Either way, even simpler, imho, than any log that one has to comb through after the fact is to create a named backup

  branch=$(git branch --show-current) && git switch -c backup-${branch} && git switch -

Carry on as planned and if you bork it all, switch to the backup branch which retains the original commits and all, delete the borked one and have another go

  git switch backup-somebranch && git branch -D somebranch && git branch -m somebranch