$ git clone -n https://src.fedoraproject.org/rpms/rubygem-serialport.git /var/lib/mock/f31-build-52980-27788/root/chroot_tmpdir/scmroot/rubygem-serialport
Cloning into '/var/lib/mock/f31-build-52980-27788/root/chroot_tmpdir/scmroot/rubygem-serialport'...
$ git reset --hard 91e7cf96fecfe80bd38a5518458b3f49659699d3
HEAD is now at 91e7cf9 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild