$ git clone -n https://src.fedoraproject.org/rpms/wlcs.git /var/lib/mock/f42-build-879662-182051/root/chroot_tmpdir/scmroot/wlcs
Cloning into '/var/lib/mock/f42-build-879662-182051/root/chroot_tmpdir/scmroot/wlcs'...
$ git fetch origin 24fc598db3295a3cb9ef60142746997b49a93932:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wlcs
 * [new ref]         24fc598db3295a3cb9ef60142746997b49a93932 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 24fc598 Rebuilt for gtest 1.15.2