$ git clone -n https://src.fedoraproject.org/rpms/rust-gir-format-check.git /var/lib/mock/f45-build-41888-786/root/chroot_tmpdir/scmroot/rust-gir-format-check
Cloning into '/var/lib/mock/f45-build-41888-786/root/chroot_tmpdir/scmroot/rust-gir-format-check'...
$ git fetch origin 70c6d15eadff48ede3d3e3e50735c9ffd7d5055d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gir-format-check
 * [new ref]         70c6d15eadff48ede3d3e3e50735c9ffd7d5055d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70c6d15 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild