[PATCH] request-pull: improve error message for invalid revision args

When an invalid revision is specified, the error message is: fatal: Needed a single revision This is misleading because, you might think there is something wrong with the command line as a whole. Now the user gets a more meaningful error message, showing the invalid revision. Signed-off-by:

Re: [PATCH] request-pull: improve error message for invalid revision args

Dirk Wallenstein writes: > When an invalid revision is specified, the error message is: > > fatal: Needed a single revision > > This is misleading because, you might think there is something wrong > with the command line as a whole. > > Now the user gets a more meaningful error message, showi