$ git clone -n https://src.fedoraproject.org/rpms/policycoreutils.git /var/lib/mock/f41-build-861833-170430/root/chroot_tmpdir/scmroot/policycoreutils
Cloning into '/var/lib/mock/f41-build-861833-170430/root/chroot_tmpdir/scmroot/policycoreutils'...
$ git fetch origin 2265bc4616a0cdd2ceb56fcdd618eee7befba428:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/policycoreutils
 * [new ref]         2265bc4616a0cdd2ceb56fcdd618eee7befba428 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2265bc4 policycoreutils-3.7-5