$ git clone -n https://src.fedoraproject.org/rpms/librabbitmq.git /var/lib/mock/f45-build-16834-491/root/chroot_tmpdir/scmroot/librabbitmq
Cloning into '/var/lib/mock/f45-build-16834-491/root/chroot_tmpdir/scmroot/librabbitmq'...
$ git fetch origin 5a2c1a4555b952328be42a997909490f0e2894ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librabbitmq
 * [new ref]         5a2c1a4555b952328be42a997909490f0e2894ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a2c1a4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild