$ git clone -n https://src.fedoraproject.org/rpms/nex.git /var/lib/mock/f39-build-1460273-33196/root/chroot_tmpdir/scmroot/nex
Cloning into '/var/lib/mock/f39-build-1460273-33196/root/chroot_tmpdir/scmroot/nex'...
$ git fetch origin 367cf647589eb4f5958c8632bf3057bfdc6c1aea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nex
 * [new ref]         367cf647589eb4f5958c8632bf3057bfdc6c1aea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 367cf64 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild