$ git clone -n https://src.fedoraproject.org/rpms/kmid2.git /var/lib/mock/f41-build-side-1-3003350-36656/root/chroot_tmpdir/scmroot/kmid2
Cloning into '/var/lib/mock/f41-build-side-1-3003350-36656/root/chroot_tmpdir/scmroot/kmid2'...
$ git fetch origin b4db5f37b55ab32efbd0180600e61cc4a7fec63e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmid2
 * [new ref]         b4db5f37b55ab32efbd0180600e61cc4a7fec63e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4db5f3 convert GPLv2+ license to SPDX