$ git clone -n https://src.fedoraproject.org/rpms/google-guice5.git /var/lib/mock/f42-build-3406831-45143/root/chroot_tmpdir/scmroot/google-guice5
Cloning into '/var/lib/mock/f42-build-3406831-45143/root/chroot_tmpdir/scmroot/google-guice5'...
$ git fetch origin 13aba3e37a14aa9da273a79362b930e6d5394736:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/google-guice5
 * [new ref]         13aba3e37a14aa9da273a79362b930e6d5394736 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13aba3e Added the README