$ git clone -n https://src.fedoraproject.org/rpms/rust-biquad.git /var/lib/mock/f45-build-40452-772/root/chroot_tmpdir/scmroot/rust-biquad
Cloning into '/var/lib/mock/f45-build-40452-772/root/chroot_tmpdir/scmroot/rust-biquad'...
$ git fetch origin 7f0863a8cb0038bcdc55cac0f7c51fae8d96da71:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-biquad
 * [new ref]         7f0863a8cb0038bcdc55cac0f7c51fae8d96da71 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f0863a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild