the prepare-resources command runs before every evergreen task, and mostly does setup that should be handled elsewhere; for instance:

• git submodule is used to pull in specific copies of the specifications repository. This should be done, explicitly using evergreen's git module support, and/or only applied to variants that actually use this data (e.g. not compile checks, static only tasks, or performance tasks.)
• go lint and errcheck could be installed or updated in shell lines in the makefile for these tasks.