$ git clone -n https://src.fedoraproject.org/rpms/wlcs.git /var/lib/mock/f40-build-746544-112718/root/chroot_tmpdir/scmroot/wlcs
Cloning into '/var/lib/mock/f40-build-746544-112718/root/chroot_tmpdir/scmroot/wlcs'...
$ git fetch origin 8885432e1d3b5e3d9c51784ae13e1cb6053e04a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wlcs
 * [new ref]         8885432e1d3b5e3d9c51784ae13e1cb6053e04a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8885432 Rebuild for gtest 1.14.0