$ git clone -n https://src.fedoraproject.org/rpms/gawk-lmdb.git /var/lib/mock/f45-build-9630-406/root/chroot_tmpdir/scmroot/gawk-lmdb
Cloning into '/var/lib/mock/f45-build-9630-406/root/chroot_tmpdir/scmroot/gawk-lmdb'...
$ git fetch origin cf46a1971e843043e8c2420e05e414583a3d6c27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gawk-lmdb
 * [new ref]         cf46a1971e843043e8c2420e05e414583a3d6c27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf46a19 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild