$ git clone -n https://src.fedoraproject.org/rpms/python-dns-lexicon.git /var/lib/mock/f43-build-59174550-6571507/root/chroot_tmpdir/scmroot/python-dns-lexicon
Cloning into '/var/lib/mock/f43-build-59174550-6571507/root/chroot_tmpdir/scmroot/python-dns-lexicon'...
$ git fetch origin fb10e373de1b03511419fb3f890a0aa6de0ce876:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dns-lexicon
 * [new ref]         fb10e373de1b03511419fb3f890a0aa6de0ce876 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb10e37 update to 3.21.1