$ git clone -n https://src.fedoraproject.org/rpms/srpc.git /var/lib/mock/f40-build-1625500-24112/root/chroot_tmpdir/scmroot/srpc
Cloning into '/var/lib/mock/f40-build-1625500-24112/root/chroot_tmpdir/scmroot/srpc'...
$ git fetch origin 2824661dcc6315251571698646195873f450eca9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/srpc
 * [new ref]         2824661dcc6315251571698646195873f450eca9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2824661 Update to 0.10.1