$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-internal.git /var/lib/mock/f38-build-side-42-init-devel-608413-26258/root/chroot_tmpdir/scmroot/golang-modernc-internal
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-608413-26258/root/chroot_tmpdir/scmroot/golang-modernc-internal'...
$ git fetch origin 12e8b8eacf244f448ea308bb473bb52af6547ea0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-internal
 * [new ref]         12e8b8eacf244f448ea308bb473bb52af6547ea0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12e8b8e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild