$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-fs.git /var/lib/mock/f38-build-side-43-rust-devel-1408806-31389/root/chroot_tmpdir/scmroot/rust-gix-fs
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1408806-31389/root/chroot_tmpdir/scmroot/rust-gix-fs'...
$ git fetch origin 50aeceab2d3851fa8fbd4519a160e23952c4ccac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-fs
 * [new ref]         50aeceab2d3851fa8fbd4519a160e23952c4ccac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 50aecea Update to version 0.8.0