$ git clone -n https://src.fedoraproject.org/rpms/pandoc.git /var/lib/mock/f40-build-1145808-21171/root/chroot_tmpdir/scmroot/pandoc
Cloning into '/var/lib/mock/f40-build-1145808-21171/root/chroot_tmpdir/scmroot/pandoc'...
$ git fetch origin 39f345b0230c2f3c3cf84fe1715ea5b5a8a299cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pandoc
 * [new ref]         39f345b0230c2f3c3cf84fe1715ea5b5a8a299cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39f345b toml-parser is now packaged in Fedora