$ git clone -n https://src.fedoraproject.org/rpms/rust-minicbor-derive.git /var/lib/mock/f45-build-43238-801/root/chroot_tmpdir/scmroot/rust-minicbor-derive
Cloning into '/var/lib/mock/f45-build-43238-801/root/chroot_tmpdir/scmroot/rust-minicbor-derive'...
$ git fetch origin 255da1ebe622adb6a6952f206ebe7c240487911e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-minicbor-derive
 * [new ref]         255da1ebe622adb6a6952f206ebe7c240487911e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 255da1e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild