• VSCode Version: 1.35.1
• OS Version: macOS 10.14

Steps to Reproduce:

1. Git menu, "Undo Last Commit"

No prompt before undoing, it just erases the commit from the tree.
This is astonishing behaviour - I was expecting it to revert or at least prompt / warn me before erasing the history.

#69937 is for merge commits, but this should always prompt for confirm

Does this issue occur when all extensions are disabled?: Yes