$ git clone -n https://src.fedoraproject.org/rpms/libgrss.git /var/lib/mock/f31-build-69028-30266/root/thebuilddir/tmp/scmroot/libgrss
Cloning into '/var/lib/mock/f31-build-69028-30266/root/thebuilddir/tmp/scmroot/libgrss'...
$ git reset --hard 5a1f8b0b2c45c944c49b5c2e03cb776edc8b1781
HEAD is now at 5a1f8b0 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild