vkResetCommandBuffer

To reset a command buffer, call:

VkResult vkResetCommandBuffer(
    VkCommandBuffer commandBuffer,
    VkCommandBufferResetFlags flags);

commandBuffer is the command buffer to reset. The command buffer can be in any state other than pending, and is moved into the initial state.
flags is a bitmask of VkCommandBufferResetFlagBits controlling the reset operation.

Any primary command buffer that is in the recording or executable state and has commandBuffer recorded into it, becomes invalid.

commandBuffer must not be in the pending state

commandBuffer must have been allocated from a pool that was created with the VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT

commandBuffer must be a valid VkCommandBuffer handle

flags must be a valid combination of VkCommandBufferResetFlagBits values

Host access to commandBuffer must be externally synchronized
Host access to the VkCommandPool that commandBuffer was allocated from must be externally synchronized ::