$ git clone -n https://src.fedoraproject.org/rpms/francis.git /var/lib/mock/f42-build-side-1-3537753-46560/root/chroot_tmpdir/scmroot/francis
Cloning into '/var/lib/mock/f42-build-side-1-3537753-46560/root/chroot_tmpdir/scmroot/francis'...
$ git fetch origin 4708dd2c35c7a1cca6235e3f55227ab03ffe9847:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/francis
 * [new ref]         4708dd2c35c7a1cca6235e3f55227ab03ffe9847 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4708dd2 25.04.2