tito tag -u is broken

[xsuchy]

tito tag -u is supposed to "Undo the most recent (un-pushed) tag."

But when I do:

tito tag
tito tag -u

I will get

$ tito tag -u
Creating output directory: /tmp/tito
Undoing tag: fedora-license-data-1.47-1
Checking for tag [fedora-license-data-1.47-1] in git repo [git@gitlab.com:fedora/legal/fedora-license-data.git]
ERROR: Cannot undo a tag when the current git state is not clean!