Are kernel trees the same as a branch in terms of git?

[CRISTIAN ANDRES VARGAS GONZALEZ]

Hi guys, there is something I want to know, in the Linux kernel mailing
list some developers refer to URLs like these tree:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master.

I doubt that in my learning about git I have not seen any source code
called tree
so I want to know if a kernel tree is a branch? very thanks :)
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