$ git clone -n https://src.fedoraproject.org/rpms/plasma-nano.git /var/lib/mock/f39-build-1629303-39538/root/chroot_tmpdir/scmroot/plasma-nano
Cloning into '/var/lib/mock/f39-build-1629303-39538/root/chroot_tmpdir/scmroot/plasma-nano'...
$ git fetch origin b8fede2939144b9389cf9ae49f963b9e04626043:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-nano
 * [new ref]         b8fede2939144b9389cf9ae49f963b9e04626043 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8fede2 5.27.9