Unfortunately, I made the same mistake and created the image
twrp-3.7.0_12-v6.5_A12-diting-skkk.img
via fastboot boot twrp-3.7.0_12-v6.5_A12-diting-skkk.img
installed.
Now my Xiaomi 12T Pro (Installed xiaomi.eu_multi_DITING_V13.0.7.0.SLFCNXM_v13-12-fastboot.zip) is running in FASTBOOT loop...