completion: complete REVERT_HEAD and BISECT_HEAD

The pseudorefs REVERT_HEAD and BISECT_HEAD are not suggested
by the __git_refs function. Add them there.

Signed-off-by: Philippe Blain <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: phil-blain

contrib/completion/git-completion.bash

@@ -767,7 +767,7 @@ __git_refs ()
 			track=""
 			;;
 		*)
-			for i in HEAD FETCH_HEAD ORIG_HEAD MERGE_HEAD REBASE_HEAD CHERRY_PICK_HEAD; do
+			for i in HEAD FETCH_HEAD ORIG_HEAD MERGE_HEAD REBASE_HEAD CHERRY_PICK_HEAD REVERT_HEAD BISECT_HEAD; do
 				case "$i" in
 				$match*|$umatch*)
 					if [ -e "$dir/$i" ]; then