Description of problem:
Since this is wrapper above "git" binary, there should be "Requires: %{_bindir}/git"

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:
$ rpm -q git-core rubygem-git
package git-core is not installed
rubygem-git-1.2.5-9.fc21.noarch

$ irb
irb(main):001:0> require 'git'
Git::GitExecuteError: git version   2>&1:sh: git: command not found
	from /usr/share/gems/gems/git-1.2.5/lib/git/lib.rb:700:in `command'
	from /usr/share/gems/gems/git-1.2.5/lib/git/lib.rb:649:in `current_command_version'
	from /usr/share/gems/gems/git-1.2.5/lib/git/lib.rb:659:in `meets_required_version?'
	from /usr/share/gems/gems/git-1.2.5/lib/git.rb:30:in `<top (required)>'
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:133:in `require'
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:133:in `rescue in require'
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:40:in `require'
	from (irb):1
	from /usr/bin/irb:11:in `<main>'



Expected results:
$ rpm -q git-core rubygem-git
git-core-2.14.1-2.fc27.x86_64
rubygem-git-1.2.5-9.fc21.noarch

$ irb
irb(main):001:0> require 'git'
=> true


Additional info: