$ git clone -n https://src.fedoraproject.org/rpms/rubygem-racc.git /var/lib/mock/f40-build-758667-119989/root/chroot_tmpdir/scmroot/rubygem-racc
Cloning into '/var/lib/mock/f40-build-758667-119989/root/chroot_tmpdir/scmroot/rubygem-racc'...
$ git reset --hard cf7455324c1a0e08eca2bdbe33d60662b7c71125
HEAD is now at cf74553 1.7.3