$ git clone -n https://gitee.com/src-anolis-os/shim-unsigned-aarch64.git /var/lib/mock/dist-an23-build-186472-60669/root/chroot_tmpdir/scmroot/shim-unsigned-aarch64
Cloning into '/var/lib/mock/dist-an23-build-186472-60669/root/chroot_tmpdir/scmroot/shim-unsigned-aarch64'...
$ git fetch origin 91d959bde6e4a3eeee657fa534e08866e8167f4b:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/shim-unsigned-aarch64
 * [new ref]         91d959bde6e4a3eeee657fa534e08866e8167f4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91d959b update to shim-unsigned-aarch64-15-7.el8_1