$ git clone -n https://src.fedoraproject.org/rpms/tuxpaint.git /var/lib/mock/f40-build-1873736-25023/root/chroot_tmpdir/scmroot/tuxpaint
Cloning into '/var/lib/mock/f40-build-1873736-25023/root/chroot_tmpdir/scmroot/tuxpaint'...
$ git fetch origin f69b4ccce4ec5a3e4fe578d0d627180a9622ee83:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tuxpaint
 * [new ref]         f69b4ccce4ec5a3e4fe578d0d627180a9622ee83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f69b4cc 0.9.33