Too many unintended update notification for non-branches.

[dmitshur]

Deal with this, because it's suboptimal.

Probably want to skip over these entries, since they're not real branches.

notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/00/10800/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/00/13200/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/00/20100/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/00/21900/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/00/24700/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/12601/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/14001/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/1401/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/1801/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/19501/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/25001/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/25101/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/27001/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/28001/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/2901/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/01/7501/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/02/1202/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/02/15702/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/02/20302/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/02/2102/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/02/25102/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/02/2602/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/02/27002/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/02/7502/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/03/1203/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/03/1503/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/03/19503/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/03/20303/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/03/2103/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/03/23803/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/03/35103/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/04/11004/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/04/1704/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/04/18704/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/04/2104/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/04/27204/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/04/35104/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/04/8204/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/05/19205/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/05/21805/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/05/35105/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/06/16306/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/06/2106/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/06/35106/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/07/10807/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/07/16007/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/07/18207/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/07/19507/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/08/13008/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/08/16508/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/08/18208/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/08/19508/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/08/27208/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/09/12509/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/09/13009/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/09/18209/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/09/19509/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/09/20109/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/09/2309/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/10610/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/11010/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/11210/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/12010/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/1510/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/16210/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/16410/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/16810/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/18210/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/19510/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/20310/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/20810/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/20910/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/2410/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/2610/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/3110/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/34110/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/4910/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/6310/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/10/7110/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/13211/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/15211/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/17211/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/17911/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/18211/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/19511/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/20311/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/21111/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/25411/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/28711/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/32511/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/32711/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/33111/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/34911/meta}
notifying of update all: {golang.org/x/tools/refactor/rename refs/changes/11/9211/meta}
...