$ git clone -n https://src.fedoraproject.org/rpms/libcgroup.git /var/lib/mock/f31-build-68172-30163/root/chroot_tmpdir/scmroot/libcgroup
Cloning into '/var/lib/mock/f31-build-68172-30163/root/chroot_tmpdir/scmroot/libcgroup'...
$ git reset --hard 676c6fd5ea2a44633193c57f6361700626491eea
HEAD is now at 676c6fd - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild