$ git clone -n https://src.fedoraproject.org/rpms/libsearpc.git /var/lib/mock/f40-build-2008349-45367/root/chroot_tmpdir/scmroot/libsearpc
Cloning into '/var/lib/mock/f40-build-2008349-45367/root/chroot_tmpdir/scmroot/libsearpc'...
$ git fetch origin 1a5b50cb5567243e6669891de8dd0ce878cc43f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsearpc
 * [new ref]         1a5b50cb5567243e6669891de8dd0ce878cc43f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a5b50c Update to 3.3