You need to edit your /etc/fstab file in your preferred text editor. Use nano if you don't like vi/m.
$ sudo vim /etc/fstab Locate the line containing /home in the second field and replace the current UUID with the UUID from your previous /home partition. Then:
$ sudo mount -a to remount partitions from your fstab configuration. That should do, but post if you get any error output when running the mount command.
Edit:
The updated question shows the home file system on your new installation doesn't have a separate mount point for /home. To create one at the location of your pre-existing /home directory, add the following to your /etc/fstab:
UUID=0a2a038c-6525-4db4-9404-4b6a6cc31318 /home ext4 defaults 0 2 and then run mount -a again. If the mount command doesn't return any errors you should reboot your system.