$ git clone -n https://src.fedoraproject.org/rpms/git-tools.git /var/lib/mock/f40-build-2048311-48989/root/chroot_tmpdir/scmroot/git-tools
Cloning into '/var/lib/mock/f40-build-2048311-48989/root/chroot_tmpdir/scmroot/git-tools'...
$ git fetch origin 57f7e72b67d12b966096d5b957102aeecc0f2914:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-tools
 * [new ref]         57f7e72b67d12b966096d5b957102aeecc0f2914 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57f7e72 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild