$ git clone -n https://src.fedoraproject.org/rpms/rubygem-racc.git /var/lib/mock/f31-build-52812-27756/root/chroot_tmpdir/scmroot/rubygem-racc
Cloning into '/var/lib/mock/f31-build-52812-27756/root/chroot_tmpdir/scmroot/rubygem-racc'...
$ git reset --hard 5b80519efe9b3fdaddf1db909f8dcafb859062ea
HEAD is now at 5b80519 a bit modification