$ git clone -n https://src.fedoraproject.org/rpms/wget2.git /var/lib/mock/f40-build-1292720-23380/root/chroot_tmpdir/scmroot/wget2
Cloning into '/var/lib/mock/f40-build-1292720-23380/root/chroot_tmpdir/scmroot/wget2'...
$ git fetch origin ff3ad5a501070454ea53915644b52dedb89dc40c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wget2
 * [new ref]         ff3ad5a501070454ea53915644b52dedb89dc40c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff3ad5a Backport upstream --progress and OCSP fixes to be more like wget 1.x