I can't even get the app to open after the lastest update. I'm on macOS 12.3.1, and the prior version worked fine. Here the top part of the bug report. Seems this app is universal. But other users are reporting the same crash in the Intel x64 build.
Make sure that you're not using AVX, or Rosetta 2 will crash there. But this seems to be file related on both platforms. Seems like this might be due to more security in macOS 12.3.1, and python2 is also removed as of macOS 12.3.
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Translated Report (Full Report Below)
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Process: Sourcetree [1529]
Path: /Applications/Sourcetree.app/Contents/MacOS/Sourcetree
Identifier: com.torusknot.SourceTreeNotMAS
Version: 4.1.6 (242)
Code Type: ARM-64 (Native)
Parent Process: launchd [1]
User ID: 501
Date/Time: 2022-04-24 11:40:52.0048 -0700
OS Version: macOS 12.3.1 (21E258)
Report Version: 12
Anonymous UUID: AC176BF8-71C0-1C25-139C-C6D196047BB6
Time Awake Since Boot: 470 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_GUARD (SIGKILL)
Exception Codes: GUARD_TYPE_FD
Exception Codes: 0x0000000000000000, 0x08fd4dbfade2dead
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: Namespace GUARD, Code 4611686022722355200
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x1b6b5d628 close + 8
1 FSEvents 0x1be0b7b14 _FSEventStreamDeallocate + 376
2 FSEvents 0x1be0b9f94 _FSEventStreamCreate + 1908
3 FSEvents 0x1be0b51a4 FSEventStreamCreate + 76
4 Sourcetree 0x104fa6c84 0x104e24000 + 1584260
5 Sourcetree 0x104fa6964 0x104e24000 + 1583460
6 Sourcetree 0x104fa68c4 0x104e24000 + 1583300
7 Sourcetree 0x104e482bc 0x104e24000 + 148156
8 Sourcetree 0x104e4c294 0x104e24000 + 164500
9 CoreFoundation 0x1b6c5addc __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 28
10 CoreFoundation 0x1b6cff578 ___CFXRegistrationPost_block_invoke + 52
11 CoreFoundation 0x1b6cff4e4 _CFXRegistrationPost + 456
12 CoreFoundation 0x1b6c29a74 _CFXNotificationPost + 732
13 Foundation 0x1b7ae6e48 -[NSNotificationCenter postNotificationName:object:userInfo:] + 96
14 AppKit 0x1b97cc89c -[NSApplication _postDidFinishNotification] + 340
15 AppKit 0x1b97cc5b4 -[NSApplication _sendFinishLaunchingNotification] + 236
16 AppKit 0x1b97c9fd8 -[NSApplication(NSAppleEventHandling) _handleAEOpenEvent:] + 588
17 AppKit 0x1b97c9bb8 -[NSApplication(NSAppleEventHandling) _handleCoreEvent:withReplyEvent:] + 780
18 Foundation 0x1b7b139e8 -[NSAppleEventManager dispatchRawAppleEvent:withRawReply:handlerRefCon:] + 348
19 Foundation 0x1b7b13820 _NSAppleEventManagerGenericHandler + 96
20 AE 0x1bd3f18f4 0x1bd3e6000 + 47348
21 AE 0x1bd3f124c 0x1bd3e6000 + 45644
22 AE 0x1bd3ea3f8 aeProcessAppleEvent + 488
23 HIToolbox 0x1bf8963fc AEProcessAppleEvent + 68
24 AppKit 0x1b97c3f04 _DPSNextEvent + 1844
25 AppKit 0x1b97c2424 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1328
26 AppKit 0x1b97b45f0 -[NSApplication run] + 596
27 AppKit 0x1b9785d08 NSApplicationMain + 1132
28 dyld 0x105265088 start + 516