$ git clone -n https://src.fedoraproject.org/rpms/airnef.git /var/lib/mock/f41-build-side-2-python-2707812-30463/root/chroot_tmpdir/scmroot/airnef
Cloning into '/var/lib/mock/f41-build-side-2-python-2707812-30463/root/chroot_tmpdir/scmroot/airnef'...
$ git fetch origin b6da29070650a989495504e44d5b7ce5c764b904:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/airnef
 * [new ref]         b6da29070650a989495504e44d5b7ce5c764b904 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6da290 convert GPLv3 license to SPDX