removed master

[pseudotensor]

By removing master, now all old scripts from rapidsai break, FYI. One cannot use the build scripts or even make anymore.

[pseudotensor]

[pseudotensor]

$ make -j 10
[  1%] Performing update step for 'cugunrock'
[  2%] Performing update step for 'raft'
[  3%] Performing update step for 'cuhornet'
[  4%] Performing update step for 'cub'
fatal: ambiguous argument 'master': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
[  5%] No patch step for 'raft'
[  6%] No patch step for 'cub'
[  7%] No configure step for 'raft'
[  8%] No configure step for 'cub'
[  9%] No build step for 'raft'
[  9%] No build step for 'cub'
[ 10%] No install step for 'raft'
[ 11%] No install step for 'cub'
[ 12%] Completed 'raft'
[ 13%] Completed 'cub'
[ 15%] Built target raft
[ 17%] Built target cub
error: pathspec 'master' did not match any file(s) known to git.
CMake Error at cugraph/cpp/build/cuhornet/tmp/cuhornet-gitupdate.cmake:201 (message):
  Failed to checkout tag: 'master'

[pseudotensor]

In general, this repo needs to be tagged by rapids version if other rapids repos reference it, and then those other references need to be specific to the tag not master/main.

[afender]

Thanks for catching that @pseudotensor I just switched cuGraph's CMake to use cuHornet's latest hashtag in https://github.com/rapidsai/cugraph/pull/1180