Recovering after a crash during installworld

[bob prohaska]

A Raspberry Pi3B running -current near r360134 crashed during installworld.
Installkernel completed in single-user mode, but it looks like something
got corrupted in files related to svnlite:

root at www:/usr/src # svnlite up .
svn: E235000: In file '/usr/src/contrib/subversion/subversion/libsvn_wc/wc_db_wcroot.c' line 311: assertion failed (format >= 1)
Abort (core dumped)
root at www:/usr/src # svnlite cleanup .
svn: E235000: In file '/usr/src/contrib/subversion/subversion/libsvn_wc/wc_db_wcroot.c' line 311: assertion failed (format >= 1)
Abort (core dumped)

The machine comes up multi-user without problems, but attempts to update
or simply rebuild the system run afoul of the svnlite errors.

Is there a practical way to recover?

Thanks for reading,

bob prohaska