$ git clone -n https://src.fedoraproject.org/rpms/perl-Lingua-EN-Fathom.git /var/lib/mock/f40-build-2239242-53609/root/chroot_tmpdir/scmroot/perl-Lingua-EN-Fathom
Cloning into '/var/lib/mock/f40-build-2239242-53609/root/chroot_tmpdir/scmroot/perl-Lingua-EN-Fathom'...
$ git fetch origin dcb0d952ad997d6f2f53d0ac9c60ca666358d888:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Lingua-EN-Fathom
 * [new ref]         dcb0d952ad997d6f2f53d0ac9c60ca666358d888 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcb0d95 1.27 bump