$ git clone -n https://github.com/xcp-ng-rpms/stunnel.git /var/lib/mock/v8.3-u-pcoval2-10168-28757/root/chroot_tmpdir/scmroot/stunnel
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10168-28757/root/chroot_tmpdir/scmroot/stunnel'...
$ git fetch origin d37dda0461c679db4df50684eaa86fd4a675c70e:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/stunnel
 * [new ref]         d37dda0461c679db4df50684eaa86fd4a675c70e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d37dda0 bump release for test build