The Khronos Vulkan Working Group has decided to rename the default branch for the Vulkan-Docs repository from ‘master’ to ‘main’. This is expected to occur over the weekend of August 29-30, 2020, assuming no unanticipated issues come up. A GitHub issue has been created with additional information. Downstream consumers of Vulkan-Docs, starting with the first specification update after August 30, 2020, you should pull from ‘main’ branch to get the current repository contents. Please refer to this GitHub issue for all further updates.