How to fix this error

Hello, Everyone

Today I discovered, that one of my git-svn-pulled trees cannot sync anymore:

$ git-svn rebase -A ../authors 
Index mismatch: cc94b590c0a458a610fca10fa01e7461c627b63b !=
09ac82e1a756c11865eca3e23c5704f73dc45244
rereading dc25ba706a6edaa0cc51dd376952b694559137c0
        D       test/Sema/undecl-objc-h.m
        M       Basic/FileManager.cpp
        M       Basic/SourceManager.cpp
        M       include/clang/Basic/FileManager.h
        M       include/clang/Basic/SourceManager.h
        M       include/clang/AST/Expr.h
        M       Sema/SemaChecking.cpp
        M       Sema/SemaType.cpp
        M       Sema/Sema.h
        M       Sema/SemaDecl.cpp
        M       Sema/SemaStmt.cpp
        M       Driver/Targets.cpp
        M       Driver/RewriteTest.cpp
Last fetched revision of refs/remotes/git-svn was r44583, but we are
about to fetch: r44571!

Maybe the actual reason were some fs transactions being rollbacked after power loss, but I'm not sure. Any idea how this can be fixed without repulling everything from scratch?

Thanks in advance.