$ git clone -n https://src.fedoraproject.org/rpms/yosys.git /var/lib/mock/f31-build-91016-32271/root/thebuilddir/tmp/scmroot/yosys
Cloning into '/var/lib/mock/f31-build-91016-32271/root/thebuilddir/tmp/scmroot/yosys'...
$ git reset --hard b68c90ed1ad628e466ef6a11eb6df84fa94f2c9d
HEAD is now at b68c90e - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild