$ git clone -n https://src.fedoraproject.org/rpms/xnnpack.git /var/lib/mock/f41-build-2410029-25459/root/chroot_tmpdir/scmroot/xnnpack
Cloning into '/var/lib/mock/f41-build-2410029-25459/root/chroot_tmpdir/scmroot/xnnpack'...
$ git fetch origin 2841666ae525c47fe4bde148edb8d0677d23f630:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xnnpack
 * [new ref]         2841666ae525c47fe4bde148edb8d0677d23f630 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2841666 Update gitcommit