svnadmin --version
   # svnadmin, version 1.10.4 (r1850624)
   svnadmin create spot-on-svn-mirror
   cd spot-on-svn-mirror
   # for digest to match, set to my uuid
   svnadmin setuuid . 6c93ff20-5766-4f58-8b6a-37614513fa33
   # svnsync needs this change to function
   echo '#!/bin/true' > hooks/pre-revprop-change
   chmod +x hooks/pre-revprop-change
   # mirror
   svnsync init file://"$(pwd)" [1]https://svn.code.sf.net/p/spot-on/code
   svnsync sync file://"$(pwd)"
   # lots of mirroring happens through revision 4133
   # checksum
   svnadmin dump . | b2sum -l 256
   # lots of dumping happens through revision 4133
   0f5c6bf5b334c2570dae9384255b60eeeff435db903afbd28f4be4c07d2ccaf7
   The synced svn repository that dumps to that b2sum for me is at:
   [2]https://github.com/xloem/spot-on-svn.git
   commit 6d869cce8caf2329001fb4a70faa1a4e95b3a48c

References

   1. https://svn.code.sf.net/p/spot-on/code
   2. https://github.com/xloem/spot-on-svn.git