$ git clone -n https://src.fedoraproject.org/rpms/valkyrie.git /var/lib/mock/f41-build-side-1-2778949-32451/root/chroot_tmpdir/scmroot/valkyrie
Cloning into '/var/lib/mock/f41-build-side-1-2778949-32451/root/chroot_tmpdir/scmroot/valkyrie'...
$ git fetch origin c471a92c6bf9fa58938dba8a4b79d0e3f08a7710:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/valkyrie
 * [new ref]         c471a92c6bf9fa58938dba8a4b79d0e3f08a7710 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c471a92 convert GPLv2 license to SPDX