$ git clone -n https://src.fedoraproject.org/rpms/pcm.git /var/lib/mock/f38-build-side-42-init-devel-915084-28730/root/chroot_tmpdir/scmroot/pcm
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-915084-28730/root/chroot_tmpdir/scmroot/pcm'...
$ git fetch origin 4eab0812f10fbbece923bb3818c8905e8fb72b84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcm
 * [new ref]         4eab0812f10fbbece923bb3818c8905e8fb72b84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4eab081 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild