$ git clone -n https://src.fedoraproject.org/rpms/libguess.git /var/lib/mock/f41-build-1266641-23069/root/chroot_tmpdir/scmroot/libguess
Cloning into '/var/lib/mock/f41-build-1266641-23069/root/chroot_tmpdir/scmroot/libguess'...
$ git fetch origin d86681bf1398381cd5eadea0df42c8e2397c5c01:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libguess
 * [new ref]         d86681bf1398381cd5eadea0df42c8e2397c5c01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d86681b license is https://spdx.org/licenses/BSD-3-Clause.html