$ git clone -n https://src.fedoraproject.org/rpms/libsmbios.git /var/lib/mock/f40-build-735362-106342/root/chroot_tmpdir/scmroot/libsmbios
Cloning into '/var/lib/mock/f40-build-735362-106342/root/chroot_tmpdir/scmroot/libsmbios'...
$ git fetch origin 50c65c24e85b4ef9f7fca6f84eb6b7fbb866da45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsmbios
 * [new ref]         50c65c24e85b4ef9f7fca6f84eb6b7fbb866da45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 50c65c2 Use make macros https://src.fedoraproject.org/rpms/libsmbios/pull-request/5