$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-CheckOS.git /var/lib/mock/f39-build-1433304-31862/root/chroot_tmpdir/scmroot/perl-Devel-CheckOS
Cloning into '/var/lib/mock/f39-build-1433304-31862/root/chroot_tmpdir/scmroot/perl-Devel-CheckOS'...
$ git fetch origin ef430125e5413ad6caeb11cec16034eb25bce4a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-CheckOS
 * [new ref]         ef430125e5413ad6caeb11cec16034eb25bce4a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef43012 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild