$ git clone -n https://src.fedoraproject.org/rpms/speedcrunch.git /var/lib/mock/f45-build-36315-703/root/chroot_tmpdir/scmroot/speedcrunch
Cloning into '/var/lib/mock/f45-build-36315-703/root/chroot_tmpdir/scmroot/speedcrunch'...
$ git fetch origin 4d3de1693f276e07385135001525d9806f907115:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/speedcrunch
 * [new ref]         4d3de1693f276e07385135001525d9806f907115 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d3de16 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild