$ git clone -n https://src.fedoraproject.org/rpms/python-pycryptodomex.git /var/lib/mock/f40-build-2106679-50594/root/chroot_tmpdir/scmroot/python-pycryptodomex
Cloning into '/var/lib/mock/f40-build-2106679-50594/root/chroot_tmpdir/scmroot/python-pycryptodomex'...
$ git fetch origin 6d8950bba9773a5ff0ac0c6bb2734d30b32e0028:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pycryptodomex
 * [new ref]         6d8950bba9773a5ff0ac0c6bb2734d30b32e0028 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d8950b Update to 3.19.0