git branch --verbose --no-abbrev --contains $contains --

With --contains, shows only the branches that contain the named commit (in other words, the branches whose tip commits are descendants of the named
commit), --no-contains inverts it. With --merged, only branches merged into the named commit (i.e. the branches whose tip commits are reachable
from the named commit) will be listed. With --no-merged only branches not merged into the named commit will be listed. If the <commit> argument is
missing it defaults to HEAD (i.e. the tip of the current branch).

/**
 * Get the symbolic commit associated with this request.
 *
 * A symbolic commit may be a commit hash, an abbreviated commit hash, a
 * branch name, a tag name, or an expression like "HEAD^^^". The symbolic
 * commit may also be absent.
 *
 * This method always returns the symbol present in the original request,
 * in unmodified form.
 *
 * See also @{method:getStableCommit}.
 *
 * @return string|null  Symbolic commit, if one was present in the request.
 */
public function getSymbolicCommit() {
  return $this->symbolicCommit;
}