$ git clone -n https://github.com/xcp-ng-rpms/wget.git /var/lib/mock/v8.3-u-pcoval2-10617-29170/root/chroot_tmpdir/scmroot/wget
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10617-29170/root/chroot_tmpdir/scmroot/wget'...
$ git fetch origin 207232d3392ec1fbe250628599ede4f8471b4ed7:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/wget
 * [new ref]         207232d3392ec1fbe250628599ede4f8471b4ed7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 207232d bump release for test build