$ git clone -n https://github.com/xcp-ng-rpms/openssh.git /var/lib/mock/v8.3-incoming-10982-29394/root/chroot_tmpdir/scmroot/openssh
Cloning into '/var/lib/mock/v8.3-incoming-10982-29394/root/chroot_tmpdir/scmroot/openssh'...
$ git fetch origin bc412bdf2a6da64513fce796706f2997f8033186:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/openssh
 * [new ref]         bc412bdf2a6da64513fce796706f2997f8033186 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc412bd Merge pull request #11 from xcp-ng-rpms/lrr-enable-ssh-rsa