$ git clone -n https://src.fedoraproject.org/rpms/pandoc-cli.git /var/lib/mock/f40-build-1965659-25205/root/chroot_tmpdir/scmroot/pandoc-cli
Cloning into '/var/lib/mock/f40-build-1965659-25205/root/chroot_tmpdir/scmroot/pandoc-cli'...
$ git fetch origin 842d691d51946c5b17da3fe7dc03f4f02f10ae10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pandoc-cli
 * [new ref]         842d691d51946c5b17da3fe7dc03f4f02f10ae10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 842d691 simplify %setup wrt %lua