$ git clone -n https://src.fedoraproject.org/rpms/perl-Algorithm-LUHN.git /var/lib/mock/f40-build-2301283-56772/root/chroot_tmpdir/scmroot/perl-Algorithm-LUHN
Cloning into '/var/lib/mock/f40-build-2301283-56772/root/chroot_tmpdir/scmroot/perl-Algorithm-LUHN'...
$ git fetch origin fb98197cdef5c1e89b63a0ff3731231d62028617:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Algorithm-LUHN
 * [new ref]         fb98197cdef5c1e89b63a0ff3731231d62028617 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb98197 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild