$ git clone -n https://src.fedoraproject.org/rpms/lookup.git /var/lib/mock/f41-build-side-1-2812350-32940/root/chroot_tmpdir/scmroot/lookup
Cloning into '/var/lib/mock/f41-build-side-1-2812350-32940/root/chroot_tmpdir/scmroot/lookup'...
$ git fetch origin 1dbe8783f02023021bbffe71a980587078523e77:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lookup
 * [new ref]         1dbe8783f02023021bbffe71a980587078523e77 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1dbe878 convert license to SPDX