$ git clone -n https://src.fedoraproject.org/rpms/perl-WWW-xkcd.git /var/lib/mock/f40-build-2022270-46795/root/chroot_tmpdir/scmroot/perl-WWW-xkcd
Cloning into '/var/lib/mock/f40-build-2022270-46795/root/chroot_tmpdir/scmroot/perl-WWW-xkcd'...
$ git fetch origin a5e60552ea330355748e45dfde80494c35fe3261:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-WWW-xkcd
 * [new ref]         a5e60552ea330355748e45dfde80494c35fe3261 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a5e6055 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild