$ git clone -n https://src.fedoraproject.org/rpms/perl-Alien-CFITSIO.git /var/lib/mock/f40-build-732993-104941/root/chroot_tmpdir/scmroot/perl-Alien-CFITSIO
Cloning into '/var/lib/mock/f40-build-732993-104941/root/chroot_tmpdir/scmroot/perl-Alien-CFITSIO'...
$ git fetch origin 3059524ac29415f10fedcec545bcb836412198c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Alien-CFITSIO
 * [new ref]         3059524ac29415f10fedcec545bcb836412198c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3059524 Update to 4.3.0.0