$ git clone -n https://src.fedoraproject.org/rpms/thc-ipv6.git /var/lib/mock/f42-build-side-1-3586670-46924/root/chroot_tmpdir/scmroot/thc-ipv6
Cloning into '/var/lib/mock/f42-build-side-1-3586670-46924/root/chroot_tmpdir/scmroot/thc-ipv6'...
$ git fetch origin 58aafe3f411b8e2ea47d0743e62d2f33b5e8fb63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/thc-ipv6
 * [new ref]         58aafe3f411b8e2ea47d0743e62d2f33b5e8fb63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58aafe3 Remove K&R function declarations for C23 compatibility (#2341431)