$ git clone -n https://src.fedoraproject.org/rpms/rust-der_derive0.4.git /var/lib/mock/f40-build-2081586-49776/root/chroot_tmpdir/scmroot/rust-der_derive0.4
Cloning into '/var/lib/mock/f40-build-2081586-49776/root/chroot_tmpdir/scmroot/rust-der_derive0.4'...
$ git fetch origin 690a7937c091cbd1ca949c2456c4349a41f6d43e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-der_derive0.4
 * [new ref]         690a7937c091cbd1ca949c2456c4349a41f6d43e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 690a793 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild