$ git clone -n https://src.fedoraproject.org/rpms/rust-http-range-header.git /var/lib/mock/f38-build-side-43-rust-devel-1416427-31457/root/chroot_tmpdir/scmroot/rust-http-range-header
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1416427-31457/root/chroot_tmpdir/scmroot/rust-http-range-header'...
$ git fetch origin c7ed42243beac895af0713e864bc5e5c0cee413c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-http-range-header
 * [new ref]         c7ed42243beac895af0713e864bc5e5c0cee413c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7ed422 Update to version 0.3.1; Fixes RHBZ#2224512