$ git clone -n https://src.fedoraproject.org/rpms/rust-fd-lock.git /var/lib/mock/f40-build-2641020-66425/root/chroot_tmpdir/scmroot/rust-fd-lock
Cloning into '/var/lib/mock/f40-build-2641020-66425/root/chroot_tmpdir/scmroot/rust-fd-lock'...
$ git fetch origin b7587a367b62bd231f96c5435854e9204d78ab8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fd-lock
 * [new ref]         b7587a367b62bd231f96c5435854e9204d78ab8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7587a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild