$ git clone -n https://src.fedoraproject.org/rpms/rust-notify-rust.git /var/lib/mock/f38-build-side-43-rust-devel-1405327-31254/root/chroot_tmpdir/scmroot/rust-notify-rust
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1405327-31254/root/chroot_tmpdir/scmroot/rust-notify-rust'...
$ git fetch origin f52ec878792ebe48651ce66d575f7c817af0b33a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-notify-rust
 * [new ref]         f52ec878792ebe48651ce66d575f7c817af0b33a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f52ec87 Update to version 4.9.0; Fixes RHBZ#2233663