$ git clone -n https://src.fedoraproject.org/rpms/rust-ordermap.git /var/lib/mock/f42-build-3264077-41244/root/chroot_tmpdir/scmroot/rust-ordermap
Cloning into '/var/lib/mock/f42-build-3264077-41244/root/chroot_tmpdir/scmroot/rust-ordermap'...
$ git fetch origin 2720cf0eabe90bb4ef1acd3b910e8ffe9b55416d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ordermap
 * [new ref]         2720cf0eabe90bb4ef1acd3b910e8ffe9b55416d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2720cf0 Update to version 0.5.5; Fixes RHBZ#2338941