It looks like the speculation that the Bad Batch (or Clone Force 99) is the same as the SCAR Squadron (Task Force 99 seen below) is a bit suspect at this point in time. The trailer makes it appear that Tarkin is hunting the Bad Batch as rogue clones who disobey orders.
Of course, this could all be a red herring to throw us off the scent, and Tarkin may win out in the end and reprogram these clones into Task Force 99. However, the evidence is pointing against this.
For starters, Clone Force 99 is organized under Sergeant “Hunter” whose homeworld is Kamino (like all clones). Task Force 99 is organized under Sergeant Kreel whose homeworld is Chagar IX. Hunter has a half-face skull tattoo whereas Kreel does not (so it appears).
Some of the other members share archetypes, but nothing enough to hang our hats on I think.
At any rate, Kreel first appears as Grakkus the Hutt’s Gamemaster in Star Wars 10 (2015), he’s first identified as Agent 5241 in #11, First identified as Kreel in #12, first appears with SCAR Squadron (Task Force 99) in #19, and the squadron is first identified by name in #21. Each of these can be purchased relatively inexpensively at this time.
Both #19 and #21 had prior talk and heat relative to the SCAR comparison as mentioned above, so more often than not, they seem to missing from bins at this point (just in my experiences of digging).
Also keep in mind that Fennec Shand will be in Bad Batch, so keep your eyes peeled for her first comics appearance ( mean other than Screen Comix which most comic collectors seem to be dismissing). Remember that War of the Bounty Hunters is coming up and she very well may be in that cast of characters.
Not that you need my seal of approval (or anybody does for that matter) but this checks out after I fact checked it. First cover appearance of SCAR Squadron/Task Force 99.
Mile High has a pretty cool Noto one for #37 as well:
And honestly, that’s all that should be spent. Right now the speculation is the most speculative speculation out there. Maybe only Mephisto Wandavision speculation was more speculative.