Lee B was right. The answer, provided by doener in #git, is to upgrade Git to 1.6.x (I had been using 1.5.x). 1.6.x offers deep cloning so that multiple wildcards can be used with the --branches
option:
$ git svn clone https://svn.myrepos.com/myproject web-self-serve \
--trunk=trunk --branches=branches/*/* --prefix=svn/
$ git branch -r
svn/development/sandbox1
svn/development/feature1
svn/development/sandbox2
svn/development/sandbox3
svn/development/model-associations
svn/maintenance/version1.0.0
svn/trunk
Exactly what I needed. Thanks for the insight, all.