On Sun, Jun 11, 2023 at 08:49:28PM +0200, Rubén Justo wrote:

In 52d59cc645 (branch: add a --copy (-c) option to go with --move (-m),
2017-06-18) a new strbuf variable was introduced, but not released.

Thus, when copying a branch that has any configuration, we have a
leak.

   $ git branch foo
   $ git config branch.foo.some-key some_value
   $ git branch -c foo bar

Looks good. Thanks for digging up the commit which introduced the
problem. I always find that gives me more confidence that the leak is
just a simple "oops, we forgot to free", and there isn't something more
subtle going on.

-Peff