$ git clone -n https://src.fedoraproject.org/rpms/kf5-khtml.git /var/lib/mock/f40-build-788177-135049/root/chroot_tmpdir/scmroot/kf5-khtml
Cloning into '/var/lib/mock/f40-build-788177-135049/root/chroot_tmpdir/scmroot/kf5-khtml'...
$ git fetch origin 6b30303a9cc5c9e736cc5b3144d9744243d28984:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-khtml
 * [new ref]         6b30303a9cc5c9e736cc5b3144d9744243d28984 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b30303 5.115.0