$ git clone -n https://src.fedoraproject.org/rpms/volk.git /var/lib/mock/f40-build-2575592-62241/root/chroot_tmpdir/scmroot/volk
Cloning into '/var/lib/mock/f40-build-2575592-62241/root/chroot_tmpdir/scmroot/volk'...
$ git fetch origin 4ae5cf6b2ff21823e68b72e6ac92eef2d26a18a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/volk
 * [new ref]         4ae5cf6b2ff21823e68b72e6ac92eef2d26a18a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ae5cf6 Enable riscv64