A further enhancement that enables coverage for most of astropy_helpers.git_helpers.update_git_devstr
A further enhancement that enables coverage for most of astropy_helpers.git_helpers.update_git_devstr

bsipocz/astropy-helpers,larrybradley/astropy-helpers,embray/astropy_helpers,embray/astropy_helpers,embray/astropy_helpers,dpshelio/astropy-helpers,astropy/astropy-helpers,Cadair/astropy-helpers,astropy/astropy-helpers,bsipocz/astropy-helpers,bsipocz/astropy-helpers,embray/astropy_helpers,Cadair/astropy-helpers,dpshelio/astropy-helpers,larrybradley/astropy-helpers,larrybradley/astropy-helpers