Other than not including ASPX or ASMX files in your packages, as a workaround you can pre-stage the content on the BDP manually.
1. If one does not already exist, create an SMSPKG<driveletter>$ directory and share on the branch distribution point.
2. Using a standard distribution point as the original source for the package, copy the packages into the SMSPKG<driveletter>$ directory.
3. On the central site where your packages exist, select your package and chose properties. On the Distribution Settings tab make sure that the Administrator manually copies this package to branch distribution points to checked.
4. Next use the package wizard to add a DP to the package. In this case you will be selecting the Branch DP.
5. Give it a few minutes to allow the new policy to flow down from the central site to the Branch DP Clients parent site.
6. Force the client to request new Machine Policy or allow it to request Machine policy on its own. Once policy is received it will take 2 minutes before the policy is applied to this client.
7. On the branch distribution point computer, double-click Configuration Manager in Control Panel.
8. On the Actions tab, select Branch Distribution Point Maintenance Task and then click Initiate Action
*Note: When creating an SMSPKG<driveletter>$ directory and share, the <driveletter> is the relevant drive on the branch distribution point. For example, SMSPKGC$ would be the directory and share created on drive C of the branch distribution point.