$ git clone -n https://src.fedoraproject.org/rpms/rust-nettle.git /var/lib/mock/f38-build-side-43-rust-devel-1397233-31052/root/chroot_tmpdir/scmroot/rust-nettle
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1397233-31052/root/chroot_tmpdir/scmroot/rust-nettle'...
$ git fetch origin 94084a36d0219c6412f914466f0b263fe9753d38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nettle
 * [new ref]         94084a36d0219c6412f914466f0b263fe9753d38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94084a3 Update to version 7.3.0; Fixes RHBZ#2207633