$ git clone -n https://src.fedoraproject.org/rpms/rust-opus.git /var/lib/mock/f45-build-43572-804/root/chroot_tmpdir/scmroot/rust-opus
Cloning into '/var/lib/mock/f45-build-43572-804/root/chroot_tmpdir/scmroot/rust-opus'...
$ git fetch origin 5be2a795a3860dc6beea4949ea42119afc94f6e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-opus
 * [new ref]         5be2a795a3860dc6beea4949ea42119afc94f6e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5be2a79 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild