Issue in desktop safari 13.1.1

An internal error was encountered in the Indexed Database server

Screenshot:

To reproduce, run the previous step once and this step twice from the [quickstart page](https://isomorphic-git.org/docs/en/quickstart). The first time works, but the second time fails, and afterwards all other fs operations throw the same error.

You can also reproduce from scratch by starting with a fresh incognito window.

I found [this bug](https://bugs.webkit.org/show_bug.cgi?id=197050) in a search, but that seems to be iOS Safari. Anyone know of a workaround for this?