$ git clone -n https://src.fedoraproject.org/rpms/scalapack.git /var/lib/mock/f45-build-35667-698/root/chroot_tmpdir/scmroot/scalapack
Cloning into '/var/lib/mock/f45-build-35667-698/root/chroot_tmpdir/scmroot/scalapack'...
$ git fetch origin dcd77c11d182b601ff91fd4a34178c52cd63f832:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scalapack
 * [new ref]         dcd77c11d182b601ff91fd4a34178c52cd63f832 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcd77c1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild