$ git clone -n https://src.fedoraproject.org/rpms/rust-async-stream-impl.git /var/lib/mock/f45-build-40289-770/root/chroot_tmpdir/scmroot/rust-async-stream-impl
Cloning into '/var/lib/mock/f45-build-40289-770/root/chroot_tmpdir/scmroot/rust-async-stream-impl'...
$ git fetch origin c5de736234723210836cbf82e6533f3136ea6ad4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-stream-impl
 * [new ref]         c5de736234723210836cbf82e6533f3136ea6ad4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c5de736 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild