$ git clone -n https://src.fedoraproject.org/rpms/rust-qapi-spec.git /var/lib/mock/f45-build-44164-811/root/chroot_tmpdir/scmroot/rust-qapi-spec
Cloning into '/var/lib/mock/f45-build-44164-811/root/chroot_tmpdir/scmroot/rust-qapi-spec'...
$ git fetch origin 93dc00532da4507b3afb1d94fce9cf882a3f2c4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-qapi-spec
 * [new ref]         93dc00532da4507b3afb1d94fce9cf882a3f2c4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 93dc005 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild