Do shadow clones copy user's injury? There are several instances where injured Naruto used shadow clones:


While fighting with Kabuto, Kabuto severed the muscle and tendon of Naruto. Later, when Naruto used a shadow clone to make Rasengan, did the shadow clone have the same injury as Naruto?
After the final fight with Sasuke (i.e. after defeating Kaguya), were the shadow clones of Naruto missing their right arms [before being treated by First Hokage, Hashirama's cells]?


Apart from these two, even thoroughly exhausted Kakashi used shadow clones after defeating Zabuza. Were these shadow clones injured?
It depends on what you mean by injury. Typically when a clone receives an injury - as in being struck with an attack - they will dissipate (there are a few cases where this is not true) and will put a lot of stress on the user. You read more information on Does the original jutsu user feel anything when a shadow clone is dispersed forcefully?

Now this is what happens in reverse. According to this Shadow Clone Technique wiki page, Shadow Clones will replicate the user at the time the jutsu is cast. 


  The clones will be created in roughly the same condition as the original, meaning that previous injuries, such as cuts and scrapes, will appear on the clones.


The clones themselves are not actually injured, but have the appearance of being injured if the user is injured when the jutsu is cast. 

As you stated, Kakashi used the jutsu after his battle with Zabuza. You can see this in this YouTube video, where the clones were summoned with torn and bloody vests.