I don’t remember exactly off the top of my head which kanji or reading it is, but I know that the mnemonic “coat” is used by both the reading “こた” and “こと” at some point, which is very confusing. I find myself failing to remember the ones that use this “coat” mnemonic very often because it is just a 50-50 guess which reading it is.
I will update the post when I have time with the specific kanji.