We can do this, but are you absolutely sure you want this?

Sure you can correct "mistakes" but it means history is re-written and people who have git pulled from your source may no longer have the same source you do or something they are depending on may be gone if it was amended.
IMHO its poor practice to allow this, but it's your project, so if you really want us to do this we will...

Sorry if I came accross too harshly there. ;) Just wanted to make sure you were aware of the consequences...

Any news here? Do you really want this? If so, I can put it in place. If not, can we close this ticket?

Please reopen this if you would like us to do it.