$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-Hexify.git /var/lib/mock/f39-build-1434544-31934/root/chroot_tmpdir/scmroot/perl-Data-Hexify
Cloning into '/var/lib/mock/f39-build-1434544-31934/root/chroot_tmpdir/scmroot/perl-Data-Hexify'...
$ git fetch origin 547360809a4467441a7426ed1788c8b354795ad9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-Hexify
 * [new ref]         547360809a4467441a7426ed1788c8b354795ad9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5473608 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild