graft: show hashes in user-facing messages
Graft was in various places just showing the revision number in status
messges. Instead, also show the stable and more useful short hash.
fixbundle() {
grep -v 'saving bundle' | grep -v 'saved backup' | \
grep -v added | grep -v adding | \
grep -v "unable to find 'e' for patching" | \
grep -v "e: No such file or directory"
}