$ git clone -n https://src.fedoraproject.org/rpms/auriferous.git /var/lib/mock/f41-build-side-1-2632101-25772/root/chroot_tmpdir/scmroot/auriferous
Cloning into '/var/lib/mock/f41-build-side-1-2632101-25772/root/chroot_tmpdir/scmroot/auriferous'...
$ git fetch origin 4376b401a3ad12820597951f03b1b2909e13624c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/auriferous
 * [new ref]         4376b401a3ad12820597951f03b1b2909e13624c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4376b40 convert GPLv2+ license to SPDX