$ git clone -n https://src.fedoraproject.org/rpms/auto-buildrequires.git /var/lib/mock/f41-build-side-1-2632108-25772/root/chroot_tmpdir/scmroot/auto-buildrequires
Cloning into '/var/lib/mock/f41-build-side-1-2632108-25772/root/chroot_tmpdir/scmroot/auto-buildrequires'...
$ git fetch origin cd65d572dbe9e7867e483f48623d1e372a590674:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/auto-buildrequires
 * [new ref]         cd65d572dbe9e7867e483f48623d1e372a590674 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd65d57 convert GPLv2+ license to SPDX