How to copy full commit hash?

### Discussed in https://github.com/extrawurst/gitui/discussions/1665

<div type='discussions-op-text'>

<sup>Originally posted by **artslob** April 23, 2023</sup>
I noticed that `Copy Hash [y]` action in Log tab copies only first 7 chars of hash. I would prefer to copy full hash. Is it possible? Do we need PR for that?</div>