$ git clone -n https://src.fedoraproject.org/rpms/rust-picky-asn1-der.git /var/lib/mock/f45-build-43835-807/root/chroot_tmpdir/scmroot/rust-picky-asn1-der
Cloning into '/var/lib/mock/f45-build-43835-807/root/chroot_tmpdir/scmroot/rust-picky-asn1-der'...
$ git fetch origin 6496b65c498343efaaf053a9ffbc65335f5e2238:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-picky-asn1-der
 * [new ref]         6496b65c498343efaaf053a9ffbc65335f5e2238 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6496b65 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild