error 'head: empty list' on importing Git repository

Henning Thielemann <[email protected]> Sat, 19 Jan 2019 21:56:17 +0100 (CET)
Newsgroups gmane.comp.version-control.darcs.user
Message-ID <alpine.DEB.2.20.1901192152240.3235@sputnik>
I try to import a small Git repository to Darcs following to this hint:

http://darcs.net/Using/Convert#importing-from-git

$ cabal get --source-repository=head QuickCheck-GenT
cloning 'QuickCheck-GenT' ...
...
$ (cd QuickCheck-GenT; git fast-export --all --progress 500) | darcs-2.14.1 convert import QuickCheck-GenT-darcs
WARNING: Ignoring out-of-order tag refs/tags/0.1.0
Tagging branch: refs/tags/0.1.0
Tagging branch: refs/tags/0.1.1
Tagging branch: refs/tags/0.1.2
Tagging branch: refs/tags/0.1.3
Tagging branch: refs/tags/0.1.4
Tagging branch: refs/tags/0.2.0
darcs-2.14.1: Prelude.head: empty list


It leaves a bit of a Darcs repository infrastructure but there is no list 
of changes. :-(