$ git clone -n https://src.fedoraproject.org/rpms/cava.git /var/lib/mock/f40-build-2208898-52147/root/chroot_tmpdir/scmroot/cava
Cloning into '/var/lib/mock/f40-build-2208898-52147/root/chroot_tmpdir/scmroot/cava'...
$ git fetch origin d47648ee03dcd008914086401e3b25ace2ef4d3a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cava
 * [new ref]         d47648ee03dcd008914086401e3b25ace2ef4d3a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d47648e Update for 0.9.1