$ git clone -n https://src.fedoraproject.org/rpms/crypto-policies.git /var/lib/mock/f41-build-side-1-2786276-32610/root/chroot_tmpdir/scmroot/crypto-policies
Cloning into '/var/lib/mock/f41-build-side-1-2786276-32610/root/chroot_tmpdir/scmroot/crypto-policies'...
$ git fetch origin c3b334b1b559c0c03e59b2a1705cfb12ec1a07be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crypto-policies
 * [new ref]         c3b334b1b559c0c03e59b2a1705cfb12ec1a07be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3b334b Update from upstream (stricter nss purposes)