$ git clone -n https://src.fedoraproject.org/rpms/libnxt.git /var/lib/mock/f40-build-786059-134151/root/chroot_tmpdir/scmroot/libnxt
Cloning into '/var/lib/mock/f40-build-786059-134151/root/chroot_tmpdir/scmroot/libnxt'...
$ git fetch origin ab18b44040c768ab645a05a3e4bcc47d8839392b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libnxt
 * [new ref]         ab18b44040c768ab645a05a3e4bcc47d8839392b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab18b44 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild