After we upgraded the Git plugin from 1.1.14 to 1.1.16, all our builds on Windows build slaves started failing like this:

Started by user anonymous
Building remotely on win-slave1 in workspace d:\hudson\workspace\my-app
Checkout:my-app / d:\hudson\workspace\my-app - hudson.remoting.Channel@95ff886:win-slave1
Using strategy: Default
Last Built Revision: Revision e00e2c1328a011ca99980e0ffd90f33337534b34 (origin/master)
Checkout:my-app / d:\hudson\workspace\my-app - hudson.remoting.LocalChannel@470a4b80
Fetching changes from 1 remote Git repository
Fetching upstream changes from d:\hudson\shared\repo.git
ERROR: Couldn't find any revision to build. Verify the repository and branch configuration for this job.

The builds on our Linux slaves are not affected. Wiping the workspaces on the Windows slaves did not help. Both clones and checkouts/updates seem to fail with the same error. Downgrading back to 1.1.14 made the Windows builds work again.