$ git clone -n https://src.fedoraproject.org/rpms/ghc-blaze-builder.git /var/lib/mock/f40-build-2591472-62664/root/chroot_tmpdir/scmroot/ghc-blaze-builder
Cloning into '/var/lib/mock/f40-build-2591472-62664/root/chroot_tmpdir/scmroot/ghc-blaze-builder'...
$ git fetch origin 979fa781db27f77dd7837297f45407926f86e969:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-blaze-builder
 * [new ref]         979fa781db27f77dd7837297f45407926f86e969 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 979fa78 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild