During translation, subgit progress looks like this:
r138200 => c06e4296ea642b475d75b90131efa9fbdf5be7f7 | 99% [||||||||| ]
which tells you the last revision translated. Sometimes, subgit will choke on a particularly large revision, but until the revision translates it does not print the revision number.
Could you change progress perhaps so it behaves like a sliding window:
r11112 => ... 97% [||| ]
and then
r11112 => c06e4296ea642b475d75b90131efa9fbdf5be7f7 r11118 => ... 98% [||| ]
r11118 => 4cc7524dcede623fab278df4461c6964046607c6 r11124 => ... 99% [||| ]
or
translating first commit r11112 => ... 97% [||| ]
r11112 => c06e4296ea642b475d75b90131efa9fbdf5be7f7 r11118 => ... 98% [||| ]