$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-object.git /var/lib/mock/f38-build-side-42-init-devel-1138942-30407/root/chroot_tmpdir/scmroot/rust-gix-object
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1138942-30407/root/chroot_tmpdir/scmroot/rust-gix-object'...
$ git fetch origin f49aa5bbfcf603c94f900a887ef3e27dbabe8810:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-object
 * [new ref]         f49aa5bbfcf603c94f900a887ef3e27dbabe8810 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f49aa5b Update to version 0.34.0; Fixes RHBZ#2229632