$ git clone -n https://src.fedoraproject.org/rpms/rust-derivative.git /var/lib/mock/f38-build-side-42-init-devel-679536-26707/root/chroot_tmpdir/scmroot/rust-derivative
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-679536-26707/root/chroot_tmpdir/scmroot/rust-derivative'...
$ git fetch origin 062deae571fb6b1188b1b1cc5a3e2b2e6a2050d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-derivative
 * [new ref]         062deae571fb6b1188b1b1cc5a3e2b2e6a2050d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 062deae Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild