> most important rule for a commit message: Add the Jira id (or whatever issue tracker you are using) in the commit message.
I think it's worth noting that the actual text in a commit message stays with the repository. The contents of an issue referenced by the id does not. This is something to be considered especially if this is for an open source project or otherwise somewhere where the git repository itself is more important/central than the issue tracker platform.
Obviously it’s a possibility, but in my experience, in the several jobs that I had in my life I experienced 1 or 2 source control migration in pretty much each of the places that I have been, and a grand total of ZERO issue tracker software change between all of them. It’s obviously anecdotal but pretty much everyone is migrating to git, changing issue tracker is something that you experience much less.
And even if it happens a proper migration would preserve the ids, so nothing is lost if it’s done correctly.
I think it's worth noting that the actual text in a commit message stays with the repository. The contents of an issue referenced by the id does not. This is something to be considered especially if this is for an open source project or otherwise somewhere where the git repository itself is more important/central than the issue tracker platform.