$ git clone -n https://github.com/xcp-ng-rpms/openssh.git /var/lib/mock/v8.3-u-pcoval2-10308-28877/root/chroot_tmpdir/scmroot/openssh
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10308-28877/root/chroot_tmpdir/scmroot/openssh'...
$ git fetch origin d38c76445124ced52aaf680d68873b430c25dd7d:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/openssh
 * [new ref]         d38c76445124ced52aaf680d68873b430c25dd7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d38c764 bump release for test build