$ git clone -n https://src.fedoraproject.org/rpms/rust-tokio-macros0.2.git /var/lib/mock/f41-build-side-1-2897318-34638/root/chroot_tmpdir/scmroot/rust-tokio-macros0.2
Cloning into '/var/lib/mock/f41-build-side-1-2897318-34638/root/chroot_tmpdir/scmroot/rust-tokio-macros0.2'...
$ git fetch origin 78fea0f29a7a1a03e10e5e18bc3439e333329074:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tokio-macros0.2
 * [new ref]         78fea0f29a7a1a03e10e5e18bc3439e333329074 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 78fea0f compat package no longer needed