$ git clone -n https://src.fedoraproject.org/rpms/memchan.git /var/lib/mock/f31-build-86732-31702/root/chroot_tmpdir/scmroot/memchan
Cloning into '/var/lib/mock/f31-build-86732-31702/root/chroot_tmpdir/scmroot/memchan'...
$ git reset --hard c9c31ce78047ea386f1bcfb170ec5490aa66221b
HEAD is now at c9c31ce - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild