tag conversion loses changes from tag commit
In the GCC repository, /tags/gcc-2_95_3 was created (by cvs2svn) at r40553 as a copy from /trunk:26993 with a very large set of changes made in the tag commit. reposurgeon wrongly discards all the contents of the r40553 commit and makes the tag point directly to the commit for r26993. (Most cases of the tag commit having nonempty contents properly preserve that commit, I don't know why it's failing to do so in this case.)