$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk4-sys0.9.git /var/lib/mock/f45-build-42161-791/root/chroot_tmpdir/scmroot/rust-gtk4-sys0.9
Cloning into '/var/lib/mock/f45-build-42161-791/root/chroot_tmpdir/scmroot/rust-gtk4-sys0.9'...
$ git fetch origin 30ed5d9791a0a6be2e39174f9f2ecbadaaca6219:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gtk4-sys0.9
 * [new ref]         30ed5d9791a0a6be2e39174f9f2ecbadaaca6219 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30ed5d9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild