$ git clone -n https://src.fedoraproject.org/rpms/Agda.git /var/lib/mock/f39-build-2469203-61444/root/chroot_tmpdir/scmroot/Agda
Cloning into '/var/lib/mock/f39-build-2469203-61444/root/chroot_tmpdir/scmroot/Agda'...
$ git fetch origin 6100f35886f848c35b1ba7b0e3f5fd864796abe6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/Agda
 * [new ref]         6100f35886f848c35b1ba7b0e3f5fd864796abe6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6100f35 update to 2.6.3