$ git clone -n https://src.fedoraproject.org/rpms/rust-indexmap.git /var/lib/mock/f41-build-side-1-2992578-36014/root/chroot_tmpdir/scmroot/rust-indexmap
Cloning into '/var/lib/mock/f41-build-side-1-2992578-36014/root/chroot_tmpdir/scmroot/rust-indexmap'...
$ git fetch origin 3329533be04abf5dbaa67db133e12b667908ba5c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-indexmap
 * [new ref]         3329533be04abf5dbaa67db133e12b667908ba5c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3329533 Update to version 2.5.0; Fixes RHBZ#2304746