$ git clone -n https://src.fedoraproject.org/rpms/NFStest.git /var/lib/mock/f41-build-side-2-python-2707798-30463/root/chroot_tmpdir/scmroot/NFStest
Cloning into '/var/lib/mock/f41-build-side-2-python-2707798-30463/root/chroot_tmpdir/scmroot/NFStest'...
$ git fetch origin 5013ffdae77b6c160bfc6094e099c9a9698e4457:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/NFStest
 * [new ref]         5013ffdae77b6c160bfc6094e099c9a9698e4457 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5013ffd convert GPLv2+ license to SPDX