$ git clone -n https://src.fedoraproject.org/rpms/rust-bitstream-io.git /var/lib/mock/f45-build-40480-772/root/chroot_tmpdir/scmroot/rust-bitstream-io
Cloning into '/var/lib/mock/f45-build-40480-772/root/chroot_tmpdir/scmroot/rust-bitstream-io'...
$ git fetch origin 8ab12699750372547d98f5d7a5c9e123ee112375:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bitstream-io
 * [new ref]         8ab12699750372547d98f5d7a5c9e123ee112375 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ab1269 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild