By running:
$ svn log —stop-on-copy http://svn.eu.apache.org/repos/asf/commons/proper/bcel
We know that starting revision 1149512 it was moved from “jakarta” to “commons/proper”.
By running:
$ svn log —stop-on-copy http://svn.eu.apache.org/repos/asf/jakarta/bcel@1149511
We learn that the 1st commit was at revision 152684.
We can also open the URL http://svn.eu.apache.org/repos/asf/!svn/bc/1149511/jakarta/bcel to check that revision