$ git clone -n https://src.fedoraproject.org/rpms/rust-event-listener4.git /var/lib/mock/f41-build-1269612-23100/root/chroot_tmpdir/scmroot/rust-event-listener4
Cloning into '/var/lib/mock/f41-build-1269612-23100/root/chroot_tmpdir/scmroot/rust-event-listener4'...
$ git fetch origin bdd8e73536786c2dbca43b7e31a6bce9d9efc00d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-event-listener4
 * [new ref]         bdd8e73536786c2dbca43b7e31a6bce9d9efc00d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdd8e73 compat package no longer needed