$ git clone -n https://src.fedoraproject.org/rpms/libsepol.git /var/lib/mock/f40-build-2008376-45368/root/chroot_tmpdir/scmroot/libsepol
Cloning into '/var/lib/mock/f40-build-2008376-45368/root/chroot_tmpdir/scmroot/libsepol'...
$ git fetch origin b9f13ff23e2aa25e18871c74cb18c445770f2e65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsepol
 * [new ref]         b9f13ff23e2aa25e18871c74cb18c445770f2e65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9f13ff SELinux userspace 3.6-rc2 release