$ git clone -n https://src.fedoraproject.org/rpms/rust-picky-asn1-x509.git /var/lib/mock/f45-build-43846-807/root/chroot_tmpdir/scmroot/rust-picky-asn1-x509
Cloning into '/var/lib/mock/f45-build-43846-807/root/chroot_tmpdir/scmroot/rust-picky-asn1-x509'...
$ git fetch origin 7734a70937108dd6ed134bfccdd2bf1172b2f039:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-picky-asn1-x509
 * [new ref]         7734a70937108dd6ed134bfccdd2bf1172b2f039 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7734a70 Update to upstream version 0.15.4