Hello, Aleksey. This sounds interesting.
Something that might be useful to you, CommitBERT: Commit Message Generation Using Pre-Trained Programming Language Model 5.
I might be able to help you very passively. Let me know. They have a codebase alongside the dataset over here 3.
Let me know.
Best Wishes !
PS : Look at this community Code.AI 3, you are more likely to find collaborators over there.