$ git clone -n https://src.fedoraproject.org/rpms/linux-user-chroot.git /var/lib/mock/f31-build-47893-26977/root/chroot_tmpdir/scmroot/linux-user-chroot
Cloning into '/var/lib/mock/f31-build-47893-26977/root/chroot_tmpdir/scmroot/linux-user-chroot'...
$ git reset --hard 4c0dab75392b7cfe823236575ce9abfa59ceb590
HEAD is now at 4c0dab7 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild