$ git clone -n https://src.fedoraproject.org/rpms/cppad.git /var/lib/mock/f42-build-side-1-3502125-45977/root/chroot_tmpdir/scmroot/cppad
Cloning into '/var/lib/mock/f42-build-side-1-3502125-45977/root/chroot_tmpdir/scmroot/cppad'...
$ git fetch origin 21f1afc53f745dff7f4c3bb869d8cd36b436f728:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cppad
 * [new ref]         21f1afc53f745dff7f4c3bb869d8cd36b436f728 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21f1afc Use g++ get_started.cpp to test the installed version of CppAD.