$ git clone -n https://src.fedoraproject.org/rpms/rust-auto_enums.git /var/lib/mock/f42-build-side-1-3540434-46574/root/chroot_tmpdir/scmroot/rust-auto_enums
Cloning into '/var/lib/mock/f42-build-side-1-3540434-46574/root/chroot_tmpdir/scmroot/rust-auto_enums'...
$ git fetch origin 5e2a1cf412d3aca72e49faa4aa3f55be9a49b629:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-auto_enums
 * [new ref]         5e2a1cf412d3aca72e49faa4aa3f55be9a49b629 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e2a1cf Update to version 0.8.7; Fixes RHBZ#2338495