$ git clone -n https://src.fedoraproject.org/rpms/libselinux.git /var/lib/mock/eln-build-side-114629-60943849-6586519/root/chroot_tmpdir/scmroot/libselinux
Cloning into '/var/lib/mock/eln-build-side-114629-60943849-6586519/root/chroot_tmpdir/scmroot/libselinux'...
$ git fetch origin e6f63e2b13236c71d54e14567605212a20b561d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libselinux
 * [new ref]         e6f63e2b13236c71d54e14567605212a20b561d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6f63e2 - SELinux userspace 3.9-rc2 release