$ git clone -n https://src.fedoraproject.org/rpms/crypto-policies.git /var/lib/mock/f42-build-3409120-45146/root/chroot_tmpdir/scmroot/crypto-policies
Cloning into '/var/lib/mock/f42-build-3409120-45146/root/chroot_tmpdir/scmroot/crypto-policies'...
$ git fetch origin f15e0ee1f0d15cdeeb25c6f69a8ca6349a1eb6a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crypto-policies
 * [new ref]         f15e0ee1f0d15cdeeb25c6f69a8ca6349a1eb6a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f15e0ee Add a build (test) dependency on oqsprovider