$ git clone -n https://github.com/xcp-ng-rpms/openssl.git /var/lib/mock/v8.3-u-pcoval2-10198-28781/root/chroot_tmpdir/scmroot/openssl
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10198-28781/root/chroot_tmpdir/scmroot/openssl'...
$ git fetch origin 00eb3a390db080ca159b474a73b2a96a747230bd:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/openssl
 * [new ref]         00eb3a390db080ca159b474a73b2a96a747230bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00eb3a3 bump release for test build