Two minor tweaks to change progress monitor

Call it "Processing changes" intead of "Updating changes". This fixes
the weird way of saying "Updating changes: updated 5" when pushing a
lot of new patch sets.

Don't output the magic refs as refs, these don't really matter to
the user and its almost always just one ref. They care more about
the new/updated changes.

Change-Id: Ic4c482cfa35ac60ff99452d1e5b77cd6c53fb05c
2 files changed