commands/rsync in Gitolite before 3.6.11, if .gitolite.rc enables rsync, mishandles the rsync command line, which allows attackers to have a "bad" impact by triggering use of an option other than -v, -n, -q, or -P.
https://groups.google.com/forum/#%21topic/gitolite-announce/6xbjjmpLePQ
https://github.com/sitaramc/gitolite/commit/5df2b817255ee919991da6c310239e08c8fcc1ae