$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-allocators-sys.git /var/lib/mock/f45-build-42229-791/root/chroot_tmpdir/scmroot/rust-gstreamer-allocators-sys
Cloning into '/var/lib/mock/f45-build-42229-791/root/chroot_tmpdir/scmroot/rust-gstreamer-allocators-sys'...
$ git fetch origin 4fa90ddd2bb36ca5eb7f7db9770c2630d4eac1e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-allocators-sys
 * [new ref]         4fa90ddd2bb36ca5eb7f7db9770c2630d4eac1e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fa90dd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild