$ git clone -n https://src.fedoraproject.org/rpms/python-niaarm.git /var/lib/mock/f38-build-side-42-init-devel-678989-26706/root/chroot_tmpdir/scmroot/python-niaarm
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-678989-26706/root/chroot_tmpdir/scmroot/python-niaarm'...
$ git fetch origin 40e541c8e2d2f5c0766087452e677ab6ef96dd6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-niaarm
 * [new ref]         40e541c8e2d2f5c0766087452e677ab6ef96dd6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40e541c Upgrade to 0.3.1