$ git clone -n https://src.fedoraproject.org/rpms/golang-github-zeebo-errs.git /var/lib/mock/f39-build-1503889-34991/root/chroot_tmpdir/scmroot/golang-github-zeebo-errs
Cloning into '/var/lib/mock/f39-build-1503889-34991/root/chroot_tmpdir/scmroot/golang-github-zeebo-errs'...
$ git fetch origin 823e161ee547097142c9f8332f7d3de42cbd004d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-zeebo-errs
 * [new ref]         823e161ee547097142c9f8332f7d3de42cbd004d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 823e161 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild