$ git clone -n https://src.fedoraproject.org/rpms/vim-omnicppcomplete.git /var/lib/mock/f41-build-725979-13125/root/chroot_tmpdir/scmroot/vim-omnicppcomplete
Cloning into '/var/lib/mock/f41-build-725979-13125/root/chroot_tmpdir/scmroot/vim-omnicppcomplete'...
$ git fetch origin e4e945ec164a2d3ed2f51dd0541b886c02965338:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vim-omnicppcomplete
 * [new ref]         e4e945ec164a2d3ed2f51dd0541b886c02965338 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4e945e Eliminate use of obsolete %patchN syntax (#2283636)