[auxym]

1. If the large objects are not referenced by any commit anymore, they should automatically get garbage collected eventually, but you can force this process with git gc: https://git-scm.com/docs/git-gc

2. Never seen that one. There's probably an arcane filter-branch command that could detect the duplicates and squash them, but personally I'd just leave it alone. How often do you look at many-years old history anyways.

[notafraudster]

Thanks. I'll read through the gc docs. If GCing doesn't help then at least that helps me situate further searches better. Appreciate it.