$ git clone -n https://src.fedoraproject.org/rpms/libs3.git /var/lib/mock/f31-build-59433-28580/root/thebuilddir/tmp/scmroot/libs3
Cloning into '/var/lib/mock/f31-build-59433-28580/root/thebuilddir/tmp/scmroot/libs3'...
$ git reset --hard d05e735c561389a29011933776b6aaef9abfb6b0
HEAD is now at d05e735 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild