$ git clone -n https://github.com/xcp-ng-rpms/rsync.git /var/lib/mock/v8.3-incoming-9909-28597/root/chroot_tmpdir/scmroot/rsync
Cloning into '/var/lib/mock/v8.3-incoming-9909-28597/root/chroot_tmpdir/scmroot/rsync'...
$ git fetch origin de8da9141c83ae798214e061d3267677974ba266:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/rsync
 * [new ref]         de8da9141c83ae798214e061d3267677974ba266 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de8da91 spec: Rebuild on openssl-3