$ git clone -n https://src.fedoraproject.org/rpms/nxtrc.git /var/lib/mock/f40-build-799822-142606/root/chroot_tmpdir/scmroot/nxtrc
Cloning into '/var/lib/mock/f40-build-799822-142606/root/chroot_tmpdir/scmroot/nxtrc'...
$ git fetch origin 6d2998388f60cfe3ee1358bedb96abe2727b4fe6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nxtrc
 * [new ref]         6d2998388f60cfe3ee1358bedb96abe2727b4fe6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d29983 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild