Not sure, but I think you can do this with the git command line tools like so:
Or something of that nature. If I recall correctly, when Dolphin used to be on Google Code, the switch from SVN to git was made, so those earliest commits should all have git hashes associated with them. I remember doing it a looong time ago. Check out this page for more info -> https://git-scm.com/docs/git-svn
Code:
git svn log --show-commit -r7564
git checkout whatever_hash_you_just_got_from_the_logOr something of that nature. If I recall correctly, when Dolphin used to be on Google Code, the switch from SVN to git was made, so those earliest commits should all have git hashes associated with them. I remember doing it a looong time ago. Check out this page for more info -> https://git-scm.com/docs/git-svn