$ git clone -n https://src.fedoraproject.org/rpms/reflections.git /var/lib/mock/f40-build-2697459-70008/root/chroot_tmpdir/scmroot/reflections
Cloning into '/var/lib/mock/f40-build-2697459-70008/root/chroot_tmpdir/scmroot/reflections'...
$ git fetch origin 2d963b0af4dc22d2e411a52447ea5b84bda636e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/reflections
 * [new ref]         2d963b0af4dc22d2e411a52447ea5b84bda636e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d963b0 Rebuilt for java-21-openjdk as system jdk