As Polaroid reinvents itself with new cameras and a new marketing campaign featuring Lady Gaga, the former Cambridge-based company will tomorrow unveil an exclusive photo of the pop star that will be presented to the MIT Museum. And Gaga herself might even pop in. If Gaga, who happens to be in town this week for concerts at TD Garden, does show up at the museum tomorrow (and we were told yesterday that possiblity "is TBD"), here's hoping she'll treat the photographers there better than the ones she insulted in New York earlier this month. As for tomorrow, Gaga and her team will be at MIT in the morning to direct the photo shoot with the large-format Polaroid that takes highly detailed, 20-by-24-inch instant photos. Jon Pollock, chief marketing officer for Polaroid, said the company has half a dozen products it's working on with Gaga, "that will be Gaga-inspired and designed products, under the combined Gaga-Polaroid brand."