$ git clone -n https://src.fedoraproject.org/rpms/golang-github-lann-builder.git /var/lib/mock/f38-build-side-42-init-devel-891804-28538/root/chroot_tmpdir/scmroot/golang-github-lann-builder
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-891804-28538/root/chroot_tmpdir/scmroot/golang-github-lann-builder'...
$ git fetch origin 420e429485e2ac0ba59444024b709581cf17f025:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-lann-builder
 * [new ref]         420e429485e2ac0ba59444024b709581cf17f025 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 420e429 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild