Broken when git co -b

[cjcjameson]

 ~/workspace/gpdb4  ae tm   4.3_STABLE ✚ 
 office-4-21  git co -b sles_121267993
A   ci/concourse/build_gpdb_sles.yml
A   ci/concourse/scripts/compile_gpdb4_sles.bash
M   configure
A   gpAux/pam/_pam_compat.h
A   gpAux/pam/_pam_macros.h
A   gpAux/pam/_pam_types.h
A   gpAux/pam/pam_appl.h
A   gpAux/pam/pam_ext.h
A   gpAux/pam/pam_modules.h
A   gpAux/pam/pam_modutil.h
M   gpAux/releng/releng.mk
Switched to a new branch 'sles_121267993'
fatal: ambiguous argument 'HEAD..origin/sles_121267993': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
fatal: ambiguous argument 'origin/sles_121267993..HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'

[bhuvnesh2703]

This also comes up when we have multiple remotes in a repo.

 ~/workspace/gpdb4  ae bc  ↑ ↓  postgis_gppkg 
 fernando  git remote -v
kuien   git@github.com:kuien/gpdb4.git (fetch)
kuien   git@github.com:kuien/gpdb4.git (push)
origin  git@github.com:greenplum-db/gpdb4.git (fetch)
origin  git@github.com:greenplum-db/gpdb4.git (push)
fatal: ambiguous argument 'HEAD..origin/postgis_gppkg': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
fatal: ambiguous argument 'origin/postgis_gppkg..HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
 ~/workspace/gpdb4  ae bc  ↑ ↓  postgis_gppkg 
 fernando  git branch -vv
  121267993-sles-gpdb4-pipeline 891116e [origin/121267993-sles-gpdb4-pipeline: ahead 1] Remove unwanted SLES jobs from the pipeline.
  4.3.8.2.GE1                   142b989 [origin/4.3.8.2.GE1] Rotate credentials for dockerhub gpdb account [#122208893]
  4.3.8.2.GE2                   bec0e77 [origin/4.3.8.2.GE2] Fix memtuple forming bug when null-saved size is larger than 32763 bytes
  4.3_STABLE                    cc6a09b [origin/4.3_STABLE] loaders includes for centos sles
  4.3_STABLE-staging            f2b5d76 Add RHEL and SLES clients packaging. [#120614129]
  4.3_STABLE_ADD_LOADERS        7fc1bd7 [origin/4.3_STABLE_ADD_LOADERS: ahead 9] loaders includes for centos sles
  4.3_STABLE_LOADERS            231e006 Fix missed test case in gpcheckcat
  4.3_STABLE_TEST               e7a0c38 [origin/4.3_STABLE_TEST: ahead 3, behind 4] gpcheckcat refactoring and nomenclature changes
  ci_into_master                3e37dd4 [origin/ci_into_master] Rename references of gpdb4 to gpdb #120767731
  gpdb-starter-ci               ea9c107 [origin/gpdb-starter-ci] Add concourse ci pipeline, configuration, and scripts [#115616393]
* postgis_gppkg                 30e1c7b [kuien/postgis_gppkg] Able to generate postgis.gppkg
fatal: ambiguous argument 'HEAD..origin/postgis_gppkg': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
fatal: ambiguous argument 'origin/postgis_gppkg..HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'