$ git clone -n https://src.fedoraproject.org/rpms/net-snmp.git /var/lib/mock/f40-build-803490-144277/root/chroot_tmpdir/scmroot/net-snmp
Cloning into '/var/lib/mock/f40-build-803490-144277/root/chroot_tmpdir/scmroot/net-snmp'...
$ git fetch origin e4058c81e49772df07d5ee18b4e430e74e27d822:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/net-snmp
 * [new ref]         e4058c81e49772df07d5ee18b4e430e74e27d822 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4058c8 Fix autoconf for f40 and lower