$ git clone -n https://src.fedoraproject.org/rpms/derrick.git /var/lib/mock/f38-build-711061-93683/root/chroot_tmpdir/scmroot/derrick
Cloning into '/var/lib/mock/f38-build-711061-93683/root/chroot_tmpdir/scmroot/derrick'...
$ git fetch origin 7572bd718fed9111417a5f6cb95992e7182f7bce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/derrick
 * [new ref]         7572bd718fed9111417a5f6cb95992e7182f7bce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7572bd7 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild