$ git clone -n https://src.fedoraproject.org/rpms/rust-tracing-futures.git /var/lib/mock/f45-build-45610-824/root/chroot_tmpdir/scmroot/rust-tracing-futures
Cloning into '/var/lib/mock/f45-build-45610-824/root/chroot_tmpdir/scmroot/rust-tracing-futures'...
$ git fetch origin 39c298712c8f80f2eb5e8866af46a1b75194e38a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tracing-futures
 * [new ref]         39c298712c8f80f2eb5e8866af46a1b75194e38a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39c2987 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild