"Head Down" is the sixth track on the Nine Inch Nails album The Slip.
The song's accompanying artwork appears to represent a person committing suicide by firing a gun through the back of their mouth, a figure facing the left with their head bent down, or a glass being poured out to its right.
God have mercy for the poor souls that have to use Clearcase. In fact it sounds like you and I may work for the same organization.