$ git clone -n https://src.fedoraproject.org/rpms/rubygem-guard.git /var/lib/mock/f29-build-443-307/root/thebuilddir/tmp/scmroot/rubygem-guard
Cloning into '/var/lib/mock/f29-build-443-307/root/thebuilddir/tmp/scmroot/rubygem-guard'...
$ git reset --hard a3ea3cc2a0b0b3d27b876c7dfb71afa95a401b5a
HEAD is now at a3ea3cc - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild