$ git clone -n https://src.fedoraproject.org/rpms/xar.git /var/lib/mock/f33-build-429742-63113/root/chroot_tmpdir/scmroot/xar
Cloning into '/var/lib/mock/f33-build-429742-63113/root/chroot_tmpdir/scmroot/xar'...
$ git reset --hard 4c1f23f9c5060f381ad3e5d95b0bef7482e078ea
HEAD is now at 4c1f23f - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild