$ git clone -n https://src.koozali.org/smecontribs/smeserver-rocketchat /var/lib/mock/smecontribs11-build-2981-18053/root/chroot_tmpdir/scmroot/smeserver-rocketchat
Cloning into '/var/lib/mock/smecontribs11-build-2981-18053/root/chroot_tmpdir/scmroot/smeserver-rocketchat'...
$ git fetch origin -:KOJI_FETCH_HEAD
error: unknown switch `:'
usage: git fetch [<options>] [<repository> [<refspec>...]]
   or: git fetch [<options>] <group>
   or: git fetch --multiple [<options>] [(<repository> | <group>)...]
   or: git fetch --all [<options>]

    -v, --[no-]verbose    be more verbose
    -q, --[no-]quiet      be more quiet
    --[no-]all            fetch from all remotes
    --[no-]set-upstream   set upstream for git pull/fetch
    -a, --[no-]append     append to .git/FETCH_HEAD instead of overwriting
    --[no-]atomic         use atomic transaction to update references
    --[no-]upload-pack <path>
                          path to upload pack on remote end
    -f, --[no-]force      force overwrite of local reference
    -m, --[no-]multiple   fetch from multiple remotes
    -t, --[no-]tags       fetch all tags and associated objects
    -n                    do not fetch all tags (--no-tags)
    -j, --[no-]jobs <n>   number of submodules fetched in parallel
    --[no-]prefetch       modify the refspec to place all refs within refs/prefetch/
    -p, --[no-]prune      prune remote-tracking branches no longer on remote
    -P, --[no-]prune-tags prune local tags no longer on remote and clobber changed tags
    --[no-]recurse-submodules[=<on-demand>]
                          control recursive fetching of submodules
    --[no-]dry-run        dry run
    --[no-]porcelain      machine-readable output
    --[no-]write-fetch-head
                          write fetched references to the FETCH_HEAD file
    -k, --[no-]keep       keep downloaded pack
    -u, --[no-]update-head-ok
                          allow updating of HEAD ref
    --[no-]progress       force progress reporting
    --[no-]depth <depth>  deepen history of shallow clone
    --[no-]shallow-since <time>
                          deepen history of shallow repository based on time
    --[no-]shallow-exclude <revision>
                          deepen history of shallow clone, excluding rev
    --[no-]deepen <n>     deepen history of shallow clone
    --unshallow           convert to a complete repository
    --refetch             re-fetch without negotiating common commits
    --[no-]update-shallow accept refs that update .git/shallow
    --refmap <refmap>     specify fetch refmap
    -o, --[no-]server-option <server-specific>
                          option to transmit
    -4, --ipv4            use IPv4 addresses only
    -6, --ipv6            use IPv6 addresses only
    --[no-]negotiation-tip <revision>
                          report that we have only objects reachable from this object
    --[no-]negotiate-only do not fetch a packfile; instead, print ancestors of negotiation tips
    --[no-]filter <args>  object filtering
    --[no-]auto-maintenance
                          run 'maintenance --auto' after fetching
    --[no-]auto-gc        run 'maintenance --auto' after fetching
    --[no-]show-forced-updates
                          check for forced-updates on all updated branches
    --[no-]write-commit-graph
                          write the commit-graph after fetching
    --[no-]stdin          accept refspecs from stdin

$ git reset --hard -
fatal: option '-' must come before non-option arguments