$ git clone -n https://src.fedoraproject.org/rpms/rust-arrayvec0.5.git /var/lib/mock/f39-build-1454935-32912/root/chroot_tmpdir/scmroot/rust-arrayvec0.5
Cloning into '/var/lib/mock/f39-build-1454935-32912/root/chroot_tmpdir/scmroot/rust-arrayvec0.5'...
$ git fetch origin 98f77a81c0dd55318e7eec1d1745c1acfe8e394e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-arrayvec0.5
 * [new ref]         98f77a81c0dd55318e7eec1d1745c1acfe8e394e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98f77a8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild