(list) at the end of commit SHA

Solution 1:

Those are decorations. They are produced by using the --decorate option. If you do not ask specifically for a particular decoration option, you get the one you configured as log.decorate, and if you did not configure one, you get --decorate=auto.

Note that very old versions of Git do not have --decorate=auto as a default, so here, an explicit --decorate is more useful. Since --auto means --decorate=no if git log's output is not going to a "terminal", --decorate is still sometimes useful anyway.¹

See also How to interpret the brackets in the git log?

¹"Terminal" is defined as anything for which isatty(1) returns true. This therefore depends on the behavior of your system's C library isatty function. On a Unix-like system, this means in any standard terminal window as long as you are not redirecting your git log output to a file or pipe.