$ git clone -n https://src.fedoraproject.org/rpms/chicken.git /var/lib/mock/f41-build-side-1-2633005-25875/root/chroot_tmpdir/scmroot/chicken
Cloning into '/var/lib/mock/f41-build-side-1-2633005-25875/root/chroot_tmpdir/scmroot/chicken'...
$ git fetch origin a8a35dd69c681ffdbe7b1adcd35494653765b1bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chicken
 * [new ref]         a8a35dd69c681ffdbe7b1adcd35494653765b1bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8a35dd convert license to SPDX