$ git clone -n https://src.fedoraproject.org/rpms/rdiff-backup.git /var/lib/mock/f37-build-680684-77102/root/chroot_tmpdir/scmroot/rdiff-backup
Cloning into '/var/lib/mock/f37-build-680684-77102/root/chroot_tmpdir/scmroot/rdiff-backup'...
$ git reset --hard 6484aabb4f31d2d98897b89d204be60e7662323e
HEAD is now at 6484aab Upgrade to new upstream version