$ git clone -n https://src.fedoraproject.org/rpms/pocketfft.git /var/lib/mock/f45-build-28713-632/root/chroot_tmpdir/scmroot/pocketfft
Cloning into '/var/lib/mock/f45-build-28713-632/root/chroot_tmpdir/scmroot/pocketfft'...
$ git fetch origin a526147dd5bb8fbda582dc026fa3d03547576b53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pocketfft
 * [new ref]         a526147dd5bb8fbda582dc026fa3d03547576b53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a526147 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild