AMSupportURL* "is implemented in both"? I get the below error message when I run git for the first time after a reboot:
objc[728]: Class AMSupportURLConnectionDelegate is implemented in both ?? (0x1eff3a7a0) and ?? (0x1188402b8). One of the two will be used. Which one is undefined.
objc[728]: Class AMSupportURLSession is implemented in both ?? (0x1eff3a7f0) and ?? (0x118840308). One of the two will be used. Which one is undefined.

It doesn't happen with other commands like go. Any idea what it means?
This is on a new M1 MBA.
I encountered the same problem.
I installed Xcode, and installed &quot;git&quot; on &quot;brew&quot;, I uninstalled &quot;git&quot; on &quot;brew&quot; and it solved the problem for now, no more errors.