$ git clone -n https://src.fedoraproject.org/rpms/khal.git /var/lib/mock/f40-build-2104345-50571/root/chroot_tmpdir/scmroot/khal
Cloning into '/var/lib/mock/f40-build-2104345-50571/root/chroot_tmpdir/scmroot/khal'...
$ git fetch origin 967d43a63cbc24ba750c1efda979a353689de698:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/khal
 * [new ref]         967d43a63cbc24ba750c1efda979a353689de698 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 967d43a opt-in to autochangelog