$ git clone -n https://src.fedoraproject.org/rpms/byaccj.git /var/lib/mock/f31-build-56393-28223/root/chroot_tmpdir/scmroot/byaccj
Cloning into '/var/lib/mock/f31-build-56393-28223/root/chroot_tmpdir/scmroot/byaccj'...
$ git reset --hard 2477c23bca77e60613e2db6127047a4c5b007940
HEAD is now at 2477c23 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild