RFC: Multiple parallel side tags

Hi, Imagine situation that somebody is working on KDE rebase and me on libgit2 rebase. Both involve rebuilding/updating some package, let's say kf5-ktexteditor. We both work in different side tags, in KDE rebase kf5-ktexteditor gets updated to a new version. In libgit2 rebase, old version gets rebuilt. Once any of us finished with side tag, we merge it. Let's say that was KDE rebase. That means, new kf5-ktexteditor is merged into the rawhide which is built against old libgit2. Then I finish with libgit2 things and we merge it into the rawhide.. That means it just downgrades kf5-ktexteditor version because koji looks at the build time and not the NVR. And even if it did, that would mean I have to manually go and rebuild all packages which are handled in multiple side tags. Do you think that scales?