Loki: Who was the mystery figure that pruned Loki in a previous episode?

In the fourth episode of Loki titled "Heart of the TVA," there is a massive cliff-hanger as the Temporal Loom collapses and expands, engulfing everything in its path. The episode concludes with a blinding light consuming Loki and his companions, making it seem like they have met their end. However, since there are two episodes remaining in the season, it is clear that they are not actually dead.The episode picks up where the previous episode left off, with Miss Minutes revealing a secret to Ravonna at the Citadel at the End of Time. Miss Minutes shows Ravonna a projection of her past conversation with He Who Remains, in which he thanks her for her service in the Multiversal War and reveals his plans to control the TVA. Ravonna, who was once in line to occupy a seat of power at the Citadel, had her memory wiped by He Who Remains. This revelation recontextualizes Ravonna's experience at the TVA and raises questions about how much of her time there she is oblivious to.Ravonna teams up with Miss Minutes to reclaim the TVA and creates chaos by using the TVA's torture box to crush General Dox and her loyalists. Meanwhile, Loki and Sylvie, along with the rest of the team, attempt to fix the Temporal Loom. During their mission, Loki is pruned by an unseen figure, only to later discover that the mystery figure is a past version of himself. After saving his past self, Loki and Sylvie continue their mission to find Timely and repair the Loom.With the help of O.B., the team manages to reboot the TVA's system and shut down Miss Minutes and the security measures. They try to bring Timely back to help repair the Loom, but it becomes clear that their efforts may be too little, too late as the temporal radiation overwhelms Timely. The episode concludes with the Temporal Loom's collapse and the uncertain fate of the TVA.The episode also explores the character of Victor Timely, who shows signs of humanity and risks his life to save the TVA. However, his fate remains uncertain, and it is unclear what this means for He Who Remains and his other variants.The conversation between Loki and Sylv