gitgetbranch: Handle unknown branch input request
gitgetbranch: Handle unknown branch input request

Change-Id: I7e8bf04d090adcb71c7271c2fa6cb95387a87348
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools