$ git clone -n https://src.fedoraproject.org/rpms/rust-emojis.git /var/lib/mock/f45-build-41428-782/root/chroot_tmpdir/scmroot/rust-emojis
Cloning into '/var/lib/mock/f45-build-41428-782/root/chroot_tmpdir/scmroot/rust-emojis'...
$ git fetch origin 74fa7ca8f137306da2954dfcbb3a2d967b4a6f3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-emojis
 * [new ref]         74fa7ca8f137306da2954dfcbb3a2d967b4a6f3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74fa7ca Update to version 0.9.0; Resolves RHBZ#2491012