$ git clone -n https://src.fedoraproject.org/rpms/xdelta.git /var/lib/mock/f31-build-60798-28784/root/chroot_tmpdir/scmroot/xdelta
Cloning into '/var/lib/mock/f31-build-60798-28784/root/chroot_tmpdir/scmroot/xdelta'...
$ git reset --hard caeb2d05804d8a18edc6280ef7868ec5eb9aed35
HEAD is now at caeb2d0 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild