$ git clone -n https://src.fedoraproject.org/rpms/rubygem-guard-compat.git /var/lib/mock/f29-build-444-307/root/thebuilddir/tmp/scmroot/rubygem-guard-compat
Cloning into '/var/lib/mock/f29-build-444-307/root/thebuilddir/tmp/scmroot/rubygem-guard-compat'...
$ git reset --hard 5a9ebc1e579849055d83fd8e8e810031d5c2e07d
HEAD is now at 5a9ebc1 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild