$ git clone -n https://src.fedoraproject.org/rpms/kjots.git /var/lib/mock/f39-build-2062474-49175/root/chroot_tmpdir/scmroot/kjots
Cloning into '/var/lib/mock/f39-build-2062474-49175/root/chroot_tmpdir/scmroot/kjots'...
$ git fetch origin 126ec360dde01fb56896502f1dccc99552b475b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kjots
 * [new ref]         126ec360dde01fb56896502f1dccc99552b475b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 126ec36 fix: KF5KontactInterface -> KPim5KontactInterface