I have seen some patches on gerrit, found "BUG=b:#bug_no." in the commit message.

example: CB:35233

I am not able to find this bug id and its significance with the particular commit.

Also, have been through the https://ticket.coreboot.org/issues, it also doesn't have those bug_no.

I want to know if coreboot uses some other bug tracking system I am unaware of or is it just that the bug id depends on some external/confidential/vendor_specific tracking system?

Next, what if I want to provide the bug=# in commit message which referred an issue on https://ticket.coreboot.org/issues?

Should I write bug=T220 or bug=b:220 for bug no 220?