$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-fs.git /var/lib/mock/f40-build-2713013-72100/root/chroot_tmpdir/scmroot/rust-gix-fs
Cloning into '/var/lib/mock/f40-build-2713013-72100/root/chroot_tmpdir/scmroot/rust-gix-fs'...
$ git fetch origin 3167c89262afe00eaf7e4e140e4fb84dcc6a8dd4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-fs
 * [new ref]         3167c89262afe00eaf7e4e140e4fb84dcc6a8dd4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3167c89 Update to version 0.10.1 (rhbz#2253227)