The small hole that was discovered on August 29 resulted in a pressure leak before it was fixed by the space station crew.
"It concluded that a manufacturing defect had been ruled out which is important to establish the truth", Dmitry Rogozin, the Roscosmos boss said.
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He also wrote "spasibo" (thank you) and signed his name on the craft in chalk.
The Soyuz MS-08 capsule touched down late on October 4, local time, according to the US and Russian space agencies.
If a person was responsible, investigators are not yet alleging an act of sabotage.
According to Dmitry Rogozin, who was placed under United States sanctions over the Ukraine crisis in 2014, said he experienced difficulties in collaborating with NASA and other U.S. agencies to solve out the issue of the ISS hole.
In a statement yesterday the head of Roscosmos declared that the hole was intentional damage caused by someone during the manufacturing process.
"The version that now remains is it was a deliberate act, and a second commission will determine where this occurred", Rogozin added.
According to the new administrator of NASA, Jim Bridenstine it is scheduled to attend the launch and it will meet Rogozin for the first time. The space agency heads had an initial conversation about it by phone on September 12.
NASA reports about this live.
They had a telephone call on September 12 during which they discussed the International Space Station leak.
NASA astronauts Drew Feustel and Ricky Arnold and Oleg Artemyev of Roscosmos touched down on steppe land southeast of the Kazakh town of Dzhezkazgan at the expected time of 1145 GMT.