$ git clone -n https://src.fedoraproject.org/rpms/knot.git /var/lib/mock/f40-build-2241728-53669/root/chroot_tmpdir/scmroot/knot
Cloning into '/var/lib/mock/f40-build-2241728-53669/root/chroot_tmpdir/scmroot/knot'...
$ git fetch origin 8b65df188761d15e4ea79ba1285a894295c1327c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/knot
 * [new ref]         8b65df188761d15e4ea79ba1285a894295c1327c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b65df1 Release 3.3.3-1