Okay, wait a minute.

There were zero Hebrew Bibles at that time.

The Bologna scroll is found seventy(ish) times in greek and hebrew (and other languages) in the Qumran caves, along with a bunch of other stuff. Each of those times is a greek-literate persons' "bible". And they're all a little different. And they have their own notes in them too. They were probably paid to do it. At least some of them said they were rabbis.

Biblical scholars don't consider "The Septuagint" (Egyptian) to be any single translation and why they use the term "Majority Text" and stuff like that, to justify grouping all that stuff into "their" New Testaments'.

If it were possibly so simple as that, there probably wouldn't be so many forms of christianity.

By Hebrew Bible I mean the texts that would later comprise the settled canon of Tanakh. I don’t mean that they had a JPS Tanakh from Barnes and Noble in hand.