builder: Also find base/patches when looking up a component
builder: Also find base/patches when looking up a component

This helps us get push notification for gnome-ostree at least, since
it's patches.

djdeath/gnome-ostree,GNOME/gnome-ostree,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,GNOME/gnome-ostree,vrutkovs/vrutkovs.github.io,djdeath/gnome-ostree,djdeath/gnome-ostree,GNOME/gnome-ostree,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous