cartridge bottom bracket bearing "hitch" or slight grinding feeling in one spot when the spindle is turned by finger pressure
The normal  &quot;feel&quot; of new cartridge bearing bottom bracket is a uniformly smooth roll that is quite resisted by the presence of grease within the cartridge body. One does not normally feel any grinding or a spot where there is any increase or decrease in the smooth but resisted turning of the spindle within the cartridge.  Thus, I would be suspect of your cartridge BB being abnormal in some way that makes an area of the rotation rough.  I have no experience with Hope BB's, but based on their reputation for high quality bike parts, I'm confident in saying that Hope BB's, like Shimano, maintain tight tolerances with quality materials and do not normally have a &quot;rough spot&quot; in the rotation of the spindle when new.
A rough spot, grinding, or excess play of the spindle are indicators of excess wear of a cartridge BB.  A new BB with any of those symptoms would indicate a defective product.  The lack of brand name is a dubious finding as well.  I would seek remediation through the policies of the sale site with the goal of returning the defective BB and getting money fully refunded.