$ git clone -n https://src.fedoraproject.org/rpms/rust-darling0.13.git /var/lib/mock/f40-build-2651851-66887/root/chroot_tmpdir/scmroot/rust-darling0.13
Cloning into '/var/lib/mock/f40-build-2651851-66887/root/chroot_tmpdir/scmroot/rust-darling0.13'...
$ git fetch origin 0ad207fdb5c23ceb1032bd9c1189b1ed368ee7a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-darling0.13
 * [new ref]         0ad207fdb5c23ceb1032bd9c1189b1ed368ee7a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ad207f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild