$ git clone -n https://src.fedoraproject.org/rpms/kf6-kidletime.git /var/lib/mock/f42-build-side-1-3583694-46890/root/chroot_tmpdir/scmroot/kf6-kidletime
Cloning into '/var/lib/mock/f42-build-side-1-3583694-46890/root/chroot_tmpdir/scmroot/kf6-kidletime'...
$ git fetch origin 1d33897fd4801090873ddfa8672f21a445ea465d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kidletime
 * [new ref]         1d33897fd4801090873ddfa8672f21a445ea465d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d33897 6.16.0