$ git clone -n https://src.fedoraproject.org/rpms/keychecker.git /var/lib/mock/f45-build-14733-463/root/chroot_tmpdir/scmroot/keychecker
Cloning into '/var/lib/mock/f45-build-14733-463/root/chroot_tmpdir/scmroot/keychecker'...
$ git fetch origin 897881653a76c512f869c6effcf800557c8a2597:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/keychecker
 * [new ref]         897881653a76c512f869c6effcf800557c8a2597 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8978816 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild