$ git clone -n https://src.fedoraproject.org/rpms/fips.git /var/lib/mock/f45-build-8984-397/root/chroot_tmpdir/scmroot/fips
Cloning into '/var/lib/mock/f45-build-8984-397/root/chroot_tmpdir/scmroot/fips'...
$ git fetch origin b628b42644984a77ed1bd983bff6f9b684f00f54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fips
 * [new ref]         b628b42644984a77ed1bd983bff6f9b684f00f54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b628b42 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild