$ git clone -n https://src.fedoraproject.org/rpms/rust-arrayvec0.5.git /var/lib/mock/f40-build-2679568-67934/root/chroot_tmpdir/scmroot/rust-arrayvec0.5
Cloning into '/var/lib/mock/f40-build-2679568-67934/root/chroot_tmpdir/scmroot/rust-arrayvec0.5'...
$ git fetch origin d66cb489edf4714fe66b48316f5007a5d4d23b5a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-arrayvec0.5
 * [new ref]         d66cb489edf4714fe66b48316f5007a5d4d23b5a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d66cb48 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild