$ git clone -n https://github.com/xcp-ng-rpms/cmake3.git /var/lib/mock/v8.3-u-pcoval2-10569-29125/root/chroot_tmpdir/scmroot/cmake3
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10569-29125/root/chroot_tmpdir/scmroot/cmake3'...
$ git fetch origin f5aa6c873da3d2a23a034c4136a82f1fcdb3a69e:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/cmake3
 * [new ref]         f5aa6c873da3d2a23a034c4136a82f1fcdb3a69e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5aa6c8 bump release for test build